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441 resources with the concept parallel lines

Videos (Over 2 Million Educational Videos Available)
How to paint a watercolor and ink flower bouquet | Watercolor Flower Painting Video
6:54
How to paint a watercolor and ink flower...
Population Genetics Video
2:45
Population Genetics
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3:42
The Secret World of Animal Sleep 101...
Other Resource Types ( 441 )
EngageNY

EngageNY Geometry Module 4: Connecting Algebra and Geometry Through Coordinates

For Teachers 9th - 12th Standards
Teach young mathematicians how to use coordinate geometry to program a robot that is bound in the room in which it sits . Help comes in the form of the 15 lessons in  the Module 4: Connecting Algebra and Geometry through Coordinates...
33 Items in Collection
Lesson Planet

EngageNY Grade 8 Math Module 4: Linear Equations

For Teachers 8th Standards
A 31-lesson unit boosts eighth-graders' math skills, specifically linear equations. By way of direct instruction, guided practice, collaborative learning opportunities, and independent practice, mathematicians write and solve linear...
18 Items in Collection
Lesson Planet

EngageNY Grade 8 Math Module 2: The Concept of Congruence

For Teachers 8th Standards
Eighth graders delve deep into the concept of congruence with a 16-lesson math module. Lessons plans offer guided practice, inquiry-based learning opportunities, and independent practice. A mid-module assessment gauges progress while an...
Lesson Planet

Constructions for Parallel Lines

For Students 9th - 12th Standards
Looking for a formative check that's to the point? Let your learners show what they know on a two-question worksheet that assesses their knowledge of parallel lines. The resource and included rubric help you understand if their ideas are...
Lesson Planet

All About Lines

For Students 7th - 10th Standards
This resource should be called "All About Lines, and Then Some!". Packed full of all the key components of linear functions, learners review how to set up different equations, find intercepts, and graph. All the main topics are included...
Lesson Planet

Algebra 1 Practice Final

For Students 8th - 11th Standards
What makes this resource special? The amazing answer key that comes with worked out solutions and notes for each problem. Practice problems include all topics ranging from linear systems to simplifying exponential expressions. The packet...
Lesson Planet

Geometry Definitions

For Students 7th - 9th Standards
Geometry is full of shapes, figures, and corresponding things here and there. The guide shares all of the key pieces of geometric information in a nicely color-coded and labeled sheet. 
Lesson Planet

California State Standards: Algebra I

For Students 8th - 10th Standards
Starting a year of Algebra I? This mighty packet practices all of the major topics with different ranges of difficulty. Standards include everything from linear to quadratic to rational expressions. Use it in a variety of ways to...
3 In 3 Collections
Lesson Planet

Analyzing Grammar and Syntax in Ayn Rand's Anthem

For Teachers 9th - 12th Standards
“I am. I think. I will.” Seek the secrets of words. Ayn Rand’s Anthem provides the text for a series of exercises that ask readers to analyze how Rand uses antimetabole, epistrophe, parallelism, and repetition to create meaning. Using...
2:42
Lesson Planet

Parallel Lines 3

For Students 7th - 9th
Starting with three linear equations, how can you tell which lines are parallel? The first equation is rewritten in slope-intercept form. The second equation represents a horizontal line, so it is already in slope-intercept form. The...
3:03
Lesson Planet

Parallel Lines 2

For Students 7th - 9th
Can you tell, algebraically, if three lines are parallel? In this video, Sal demonstrates how to rewrite linear equations in slope-intercept form and compare the slope of each line.
1 In 1 Collection
Lesson Planet

The Geometry of Letters

For Teachers 3rd - 5th Standards
Use the alphabet as a tool for teaching your class about geometric figures. Break apart capital letters into line segments and arcs. Classify angles as right, acute, or obtuse. Identify parallel and perpendicular lines. An excellent...
3:56
Lesson Planet

SAT Prep: Test 7 Section 2 Part 2

For Students 9th - 12th
Test-takers who have a hard time transitioning between math skills will find this video very helpful, as Sal moves quickly through increasingly complicated algebra and geometry problems. Not only are his math techniques top-notch, but...
Lesson Planet

Poetry Shopping Spree

For Teachers 6th - 12th Standards
Scholars demonstrate the ability to evaluate authors' use of literary elements such as metaphor, simile, personification, imagery, and onomatopoeia. They are provided with a checklist and must shop for poems that contain the poetry terms...
Lesson Planet

Parallelism

For Students 9th - 12th Standards
What is parallelism? Novice writers learn about parallelism and practice balancing 10 sentences for better syntax and parallel structure. A clear, straightforward learning exercise with answers included.
Lesson Planet

Identifying Linear Functions from Graphs

For Teachers 6th - 9th
Keep your mathematicians engaged using this group linear functions activity. Each of ten groups receives two graphs with both an image and equation, as well as a "who has" phrase to call out the next graph. Scholars stay on their toes as...
Lesson Planet

Worksheet 3.5 Simultaneous Equations

For Students 8th - 9th
For this simultaneous equations worksheet, learners solve and complete 7 various types of problems. First, they solve graphically the system of equations shown. Then, students find the number of solutions that each pairs of equations...
Lesson Planet

Postulates, Angles, and Their Relationships

For Students 8th - 11th Standards
More than a worksheet, learners go through geometry topics example by example on the nicely organized handout. From postulates to classifying angles, there are rules and examples provided for each topic. The ten pages of problems provide...
10:00
Lesson Planet

SAT Prep: Test 2 Section 6 Part 1

For Students 9th - 12th
Using The Official SAT Study Guide, Sal begins another review session of eighteen problems, six of which are addressed in this video. The problems involve variables in linear equations, angles and parallel lines, and ratios. One problem...
Lesson Planet

Ancient Aqueduct Analysis Project

For Teachers 9th - 12th Standards
Let the class' knowledge of geometry flow like water in an aqueduct. Future mathematicians research ancient Roman aqueducts and consider the geometric concepts necessary in their construction. They then use GeoGebra to create models of...
Lesson Planet

Streets of Stephens City

For Teachers 9th - 12th Standards
Who has the best street smarts? An educational lesson has future mathematicians analyze street maps and measure angles on the map to determine if streets are parallel. They also consider safety issues at different types of intersections.
Lesson Planet

Parallel Lines Task

For Teachers 9th - 12th Standards
Transform the classroom into a coordinate plane. Scholars walk along parallel lines drawn on a coordinate plane on the classroom floor. They measure angles and slopes and use the results to develop criteria that would make the lines...
Lesson Planet

Parallel Lines Cut By a Transversal

For Teachers 9th - 12th Standards
Perhaps planning a city isn't so difficult after all. Scholars first perform geometric constructions and investigate how parallel lines are useful in real-world situations. They then work on a city design project, drawing street maps,...
Lesson Planet

Google Earth Trip

For Teachers 9th - 12th Standards
Travel the world instantly—and learn about math along the way. Using pictures of famous places taken from Google Earth, scholars look for parallel and perpendicular lines based on slope and angle measurements. They also calculate...
Lesson Planet

Parallel Lines Cut by a Transversal

For Teachers 9th - 12th Standards
Use the parallel lines to find your way. After first reviewing geometric constructions and the relationships between angles formed by parallel lines and a transversal, young mathematicians write proofs for theorems relating to parallel...
Lesson Planet

Real Life Parallels

For Teachers 9th - 12th Standards
There's no parallel to a great resource. Scholars take part in three lessons in which they investigate parallel lines in real-world situations. They search for and take pictures of parallel lines in and around the school, develop artwork...
9:32
Lesson Planet

Parallel and Perpendicular Lines - Part 2

For Students 8th - 11th Standards
Parallel and perpendicular lines aren't that difficult to find. Learners watch an instructional video to see how to write equations of lines that are parallel or perpendicular to a given line and pass through a given point. Some of the...
11:09
Lesson Planet

Parallel and Perpendicular Lines - Part 1

For Students 8th - 11th Standards
Ever ponder parallel and perpendicular lines? An engaging video first investigates how the slopes of lines indicate whether two lines are parallel or perpendicular. It goes on to show how to use the equations of two lines to tell whether...
Lesson Planet

Module 6: Connecting Algebra and Geometry

For Teachers 9th - 12th Standards
A geometry module connects algebraic reasoning to geometry. It challenges scholars to investigate the slope criteria for parallel and perpendicular lines, prove theorems involving coordinate geometry, and write equations for circles and...
Lesson Planet

Module 3: Geometric Figures

For Teachers 9th - 12th Standards
It's just not enough to know that something is true. Part of a MVP Geometry unit teaches young mathematicians how to write flow proofs and two-column proofs for conjectures involving lines, angles, and triangles.
8:02
Lesson Planet

Perpendicular Lines

For Students 8th - 10th Standards
How are the slopes of perpendicular lines related? It turns out they are always opposite reciprocals. A video instructor emphasizes this fact with graphs, examples, and symbolic representations. He follows that instruction with...
5:15
Lesson Planet

Graphs: Parallel lines

For Students 8th - 10th Standards
Parallel lines must always have the same slope. Learners use this bit of information to extend their equation writing skills. A video lesson explains how to write the equation of a line parallel to a given line and through a given point....
Lesson Planet

Latitude and Longitude Differentiated Lesson Plan

For Teachers 3rd - 5th Standards
Scholars warm-up their map skills with a discussion using location words to describe familiar places. An engaging video informs class members about latitude and longitude. Three leveled activities extend the learning experience for...
Lesson Planet

Betweenness I

For Students 8th - 11th Standards
Just between us, this is a pretty cool lesson! Given two functions with the same slope, learners write three new functions whose outputs are all between the given functions. The question is open-ended, allowing pupils to explore the...
Lesson Planet

What's Your Angle?

For Teachers 9th - 11th Standards
Explore angle relationships with a hands-on activity. Young mathematicians begin by drawing parallel lines cut by a transversal and measuring the angle pairs. After establishing the angle pairs, individuals show their understanding by...
Lesson Planet

Transparent Transversals

For Students 9th - 11th Standards
Parallel lines and transversals work together to create unique angle pairs. An inquiry-based activity allows scholars to explore these relationships and give them each a name. Flashcards allow them to study the new vocabulary.
2:55
Lesson Planet

Parallel Lines and Transversals: Lesson

For Students 7th - 11th Standards
Segment transversals proportionally. Given a diagram with three parallel lines and two transversals, the narrator of a short video points out the parallel lines cut the transversals proportionally. The portion of a long playlist on...
3:17
Lesson Planet

Triangle Proportionality: Lesson

For Students 7th - 11th Standards
Look at proportionality from a parallel perspective. A section of an expansive geometry playlist introduces the Triangle Proportionality Theorem. Using the theorem, the video shows how to determine missing measurements in triangles.
4:28
Lesson Planet

Classifying Quadrilaterals in the Coordinate Plane: Lesson

For Students 8th - 11th Standards
Coordinate the classification of quadrilaterals. Given the definitions of special quadrilaterals, a portion of a geometry playlist highlights ways to classify a quadrilateral. The video takes information from figures on a coordinate...
3:57
Lesson Planet

Distance Between Parallel Lines: Lesson

For Students 9th - 12th Standards
Rely on slope when counting won't do. Using horizontal and vertical parallel lines, the presentation shows scholars how to find the distance by counting. The video uses the relationship of the slopes of perpendicular lines to find two...
3:42
Lesson Planet

Parallel Lines in the Coordinate Plane: Lesson

For Students 8th - 10th Standards
Discover the parallel structure of parallel lines. Provided with two parallel lines on a coordinate plane, the presenter shows that the rise and run, or slope, of the two lines are the same. The resource, which is a portion of a larger...
2:37
Lesson Planet

Same Side Interior Angles: Lesson

For Students 9th - 12th Standards
Supplement your scholars' knowledge of angles involved with parallel lines. Using the properties of alternate interior angles and linear pairs, the presenter shows interior angles located on the same side of a transversal of parallel...
1:45
Lesson Planet

Alternate Exterior Angles: Lesson

For Students 9th - 12th Standards
Use an alternate approach to parallel lines. A resource in a comprehensive playlist on basic geometry develops the concept of alternate exterior angles and parallel lines. The presentation demonstrates how to identify alternate exterior...
1:57
Lesson Planet

Alternate Interior Angles: Lesson

For Students 9th - 12th Standards
Concepts of alternate interior angles parallel the concepts of corresponding angles. Using a diagram, the presentation defines and identifies alternate interior angles formed by a transversal and two parallel lines. The video in a...
2:27
Lesson Planet

Corresponding Angles: Lesson

For Students 9th - 12th Standards
Take a parallel view of correspondence. The resource, part of a playlist on basic geometry, introduces the corresponding angle postulate. By first identifying corresponding angles, the video highlights the relationship between the angle...
5:43
Lesson Planet

Parallel and Skew Lines: Lesson

For Students 7th - 11th Standards
Is it possible for a pair to be parallel and skew? The resource provides the class opportunities to find out by examining the properties of parallel and skew lines. Part of a playlist on basic geometry, the video includes a brief...
Lesson Planet

Home Lines

For Teachers 9th - 12th Standards
Using properties of the slopes of parallel and perpendicular lines, pupils write the equations of sides of polygons drawn on the coordinate plane. Scholars create a room following a set of requirements and determine the equations of the...
Lesson Planet

Writing Equations for Parallel Lines

For Students 9th - 12th Standards
Make connections between geometry and algebra concepts. Using a point on a side of a geometric figure and the equation of the line that contains the parallel opposite side, learners find the unknown equation of the line. They write the...
15:18
Lesson Planet

Value that Makes Two Tangent Lines Parallel

For Students 11th - Higher Ed
Perform parallel calculations to find equal slopes. Using the formula for the equation of the tangent line to a point, the resource sets out to find two points with a difference of one that have parallel tangent lines.The 25th video in a...
Lesson Planet

Building Blocks of Geometry

For Teachers 8th - 12th Standards
Search high and low for geometry. Using cameras, groups scour the school campus looking for geometric figures. The goal is to collect the most points by finding the higher scoring geometric figures for each category.
Lesson Planet

Identify Line Types: Intersecting and Parallel Lines

For Students 6th Standards
Navigate your way through a lesson on types of lines. Individuals drag line segments to illustrate paths between pairs of houses on an interactive map. They determine if these line segment pairs are intersecting or parallel.
Lesson Planet

Identify Line Types: Identify Types of Lines

For Students 6th - 12th Standards
If lines aren't parallel or perpendicular, then what are they? An interactive lets users rotate a line to change its orientation with respect to another line. It then indicates whether the lines are parallel, perpendicular, or...
Lesson Planet

Accurately Acquired Angles

For Teachers 9th - 12th Standards
From any angle, the resource on proving angle relationships is a good one to use. Scholars first engage in activities that enable them to identify types of angles when a transversal cuts two parallel lines. In groups, they prove a...
Lesson Planet

Basic Definitions in Geometry

For Teachers 9th - 12th Standards
Can you define that basic figure? Building upon the undefined terms in geometry, the lesson plan defines basic geometry figures. The resource defines line segment, ray, angle, perpendicular lines, and parallel lines.
Lesson Planet

Solving a System of Equations 1

For Students 9th - 12th Standards
What happens when the graph of a system of equations has no intersection point? Pupils solve a system of two linear equations both graphically and algebraically. This particular problem involves the case of no solutions (parallel lines).
Lesson Planet

Parallel and Skew Lines: Parallel or Not?

For Students 6th - 12th Standards
There's nothing askew about an informative resource. Pupils adjust one of two lines in an interactive to determine if the lines are parallel or skew. They answer a set of challenge questions about the lines.
Lesson Planet

When Will We Ever Meet?

For Teachers 9th - 11th Standards
Investigate the slippery slope of parallel and perpendicular lines. The lesson explores the relationship between the slopes of parallel and perpendicular lines. Pupils use graphing calculators to graph lines with equal slopes and lines...
1 In 1 Collection 7:46
Lesson Planet

Angle Basics

For Students 4th - 8th Standards
Take a linear approach to acquaint the class with angles. The video introduces the idea of angles from the notion of intersecting lines. Using the idea of perpendicular lines, the resource defines right, acute, and obtuse angles along...
4:14
Lesson Planet

Equation of Parallel Lines

For Students 9th - 12th Standards
Analyze patterns in equations of parallel lines. Building on previous knowledge of parallel lines and writing linear equations, learners watch how to create an equation of a line parallel to a given line. The video emphasizes the...
1:40
Lesson Planet

Parallel and Perpendicular Lines

For Students 8th - 10th Standards
Investigate parallel and perpendicular lines in the coordinate plane. Watch as the instructor demonstrates graphing the two types of lines. She highlights the patterns of the slope or steepness of the pairs of lines to make the concept...
Lesson Planet

Intersecting and Parallel Lines

For Students 6th - 8th Standards
Sometimes line segments just refuse to meet. Young mathematicians connect houses on an interactive map using line segments. They must then determine whether these line segment pairs are intersecting or parallel.
Lesson Planet

Proving the Alternate Interior Angles Theorem

For Students 9th - 12th Standards
Proofs not included; you must write them on you own. Learners write a proof that alternate interior angles are congruent. The proof must rely on rigid motions.
Lesson Planet

Proving Slope Criterion for Parallel Lines 2

For Students 9th - 12th Standards
There's a simple way to tell if lines are parallel. Individuals prove that if lines a and b have the same slope, then they are parallel. Proofs will likely depend on similar triangles and alternate interior angles.
Lesson Planet

Proving Slope Criterion for Parallel Lines 1

For Students 9th - 12th Standards
Parallel lines and the slope formula...two seemingly distinct concepts, but a connection exists nonetheless. Young mathematicians prove that if two lines are parallel, then their slopes are equal. They have the option of using a...
Lesson Planet

Equations of Parallel Lines: Exploring Equations

For Students 9th - 11th Standards
Same slope, different point — what's the same and what's different about an equation? Young mathematicians use an interactive to position a line parallel to a given line and through a given point. They observe that the equation will have...
Lesson Planet

Comparing Equation of Parallel and Perpendicular Lines: Parallel and Perpendicular Lines

For Students 9th - 11th Standards
It seems perpendicular lines have slopes which follow a specific rule. Scholars use an interactive to investigate this rule by moving a pair of lines on a coordinate plane. They find that perpendicular lines have slopes that are opposite...
Lesson Planet

Finding Angle Measures 2

For Students 9th - 12th Standards
Can your pupils determine the measurement of seven angles from the measurement of just one? Geometry enthusiasts tackle this task in a problem involving parallel lines with a transversal. After finding the correct measurements, the class...
Lesson Planet

Dilation of a Line: Factor of Two

For Students 9th - 12th Standards
A dilation of two doubles the length of a line segment, but what about a line? Young mathematicians investigate how a dilation through a point not on a line affects a line.
Lesson Planet

Definition of Parallel Lines

For Students 9th - 12th Standards
What does it take to be precise in creating a definition? Scholars demonstrate an understanding of parallel lines by drawing them. They develop a definition that contains enough information but does not have any unecessary criteria.
Lesson Planet

Define a Translation

For Students 9th - 12th Standards
Translate from action to a definition. Given a point and a directed line segment, learners conduct a transformation. The scholars record the steps they take while performing the transformation. The individuals develop a definition from...
Lesson Planet

Finding Angle Measures 3

For Students 9th - 12th Standards
Is your class up to the challenge of angle measurement? Find out using a fun formative! Geometry scholars show off their skills using a simple worksheet involving parallel lines, transversals, and missing measurements. Check up on those...
Lesson Planet

Transformations and Symmetry

For Teachers 9th - 10th Standards
Flip, turn, and slide about the coordinate plane. Pupils define the rigid motions and experiment with them before determining the relationships of the slopes of parallel and perpendicular lines. The sixth unit in a nine-part series...
Lesson Planet

Connecting Algebra and Geometry

For Teachers 9th - 10th Standards
Connect algebra and geometry on the coordinate plane. The eighth unit in a nine-part integrated course has pupils develop the distance formula from the Pythagorean Theorem. Scholars prove geometric theorems using coordinates including...
Lesson Planet

Slope

For Teachers 9th - 11th Standards
What does slope have to do with lines? Pupils work with lines and determine the slope of the lines informally and with the slope formula. Groups use their knowledge to calculate the slopes of parallel and perpendicular lines. They also...
Lesson Planet

Lines and Angles

For Teachers 9th - 11th Standards
Explore angle relationships associated with transversals. Pupils construct parallel lines with a transversal and find the measures of the angles formed. They figure out how the different angles are related before constructing...
Lesson Planet

Constructions

For Teachers 9th - 11th Standards
Pupils learn the steps for basic constructions using a straightedge, a compass, and a pencil. Pairs develop the skills to copy a segment and an angle, bisect a segment and an angle, and construct parallel and perpendicular lines.
Lesson Planet

Angles: Parallel Lines

For Students 9th - 11th Standards
Viewers are presented with seven problems with parallel lines and angle relationships and must use the given information to find the measures of specific angles. To finish, they explain their process in finding the measures in the problems.
1 In 1 Collection
EngageNY

Angles Associated with Parallel Lines

For Students 8th Standards
Explore angle relationships created by parallel lines and transversals. The 13th lesson plan of 18 prompts scholars use transparency paper to discover angle relationships related to transversals. Learners find out that these angles pairs...
1 In 1 Collection
EngageNY

End-of-Module Assessment Task - Grade 8 Mathematics (Module 2)

For Students 8th Standards
Can your classes apply the knowledge they have learned? Use this performance task to find out! Individuals use transformations to explain congruence and angle relationships within parallel lines to find missing values. They show what...
1 In 1 Collection
EngageNY

Rotations of 180 Degrees

For Students 8th Standards
What happens when rotating an image 180 degrees? The sixth lesson in the series of 18 takes a look at this question. Learners discover the pattern associated with 180-degree rotations. They then use transparency paper to perform the...
1 In 1 Collection
EngageNY

Translating Lines

For Students 8th Standards
Define parallel lines through transformations. The third lesson of 18 examines the result of the translation of a line. Two possible outcomes include coinciding lines and parallel lines.
1 In 1 Collection
EngageNY

Nature of Solutions of a System of Linear Equations

For Teachers 8th Standards
If at first you cannot graph, substitute. The lesson introduces the substitution method as a way to solve linear systems if the point of intersection is hard to determine from a graph. The 28th installment of a 33-part series finishes...
1 In 1 Collection
EngageNY

Characteristics of Parallel Lines

For Teachers 8th Standards
Systems of parallel lines have no solution. Pupils work examples to discover that lines with the same slope and different y-intercepts are parallel. The 27th segment of 33 uses this discovery to develop a proof, and the class determines...
1 In 1 Collection
EngageNY

Fundamental Theorem of Similarity (FTS)

For Teachers 8th Standards
How do dilated line segments relate? Lead the class in an activity to determine the relationship between line segments and their dilated images. In the fourth section in a unit of 16, pupils discover the dilated line segments are...
7:59
Lesson Planet

Graphing Parallel and Perpendicular Lines

For Students 9th - 12th Standards
What do parallel and perpendicular lines have to do with slope? The video highlights the importance of slope when graphing parallel and perpendicular lines. The instructor shows several examples of lines that are parallel and...
Lesson Planet

Quadrilaterals

For Teachers 9th - 12th Standards
What figure is formed by connecting the midpoints of the sides of a quadrilateral? The geometry assessment task has class members work through the process of determining the figure inscribed in a quadrilateral. Pupils use geometric...
Lesson Planet

Graphing Equations on the Cartesian Plane: Slope

For Teachers 7th - 9th Standards
Slopes are not just for skiing. Instructors introduce class members to the concept of slope and teach them how to calculate the slope from a graph or from points. The lesson also includes the discussion of slopes of parallel and...
Lesson Planet

Parallel Lines, Transversals, and Angles: What’s the Connection?

For Students 9th - 11th Standards
Streets, bridges, and intersections, oh my! Parallel lines and transversals are a present in the world around us. Learners begin by discovering the relationship of the angles formed by parallel lines and a transversal. They then apply...
7:58
Lesson Planet

Perpendicular and Parallel Lines

For Students 9th - 12th Standards
Provide the definitions of parallel and perpendicular lines, as well as the relationships between their slopes. Two examples explain the process of finding the equation of either a perpendicular or parallel line to another line through a...
Lesson Planet

Classifying Equations of Parallel and Perpendicular Lines

For Teachers 9th - 12th Standards
Parallel parking might be difficult, but finding parallel lines is fairly simple. In this lesson, learners first complete an assessment task involving parallel and perpendicular lines in the coordinate plane. Individuals then take part...
Lesson Planet

Representations of a Line

For Students 7th - 10th Standards
Line up to learn about lines! Scholars discover how to express patterns as linear functions. The workbook then covers how to graph and write linear equations in slope-intercept form, as well as how to write equations of parallel and...
Lesson Planet

Parallel and Perpendicular Lines

For Students 8th - 11th Standards
Enhance your class's understanding of linear equations by extending their study to parallel and perpendicular lines. Young mathematicians learn the relationship between the slopes of parallel and perpendicular lines. They then use that...
Lesson Planet

Expressing Geometric Properties with Equations

For Students 9th - 11th Standards
Algebra and geometry are not interchangeable. Demonstrate why not with a series of problems that deal with the equations of circles and equations of lines that meet specific criteria. 
Lesson Planet

Vocabulary Representation (Grade 6)

For Students 6th Standards
Support math vocabulary instruction with a reference sheet designed to meet the needs of sixth grade mathematicians. Four pages consist of 20 terms, their definitions, and a picture representation. Terms include percent, least...
Lesson Planet

Vocabulary Representation (Grade 5)

For Students 5th Standards
Support math vocabulary with a reference sheet designed for fifth grade scholars. Three pages offer 13 terms accompanied by their definition and a picture representation. Terms include equation, perpendicular, ordered pair, and more! 
Lesson Planet

Vocabulary Representation (Grade 4)

For Students 4th Standards
Reinforce fourth grade math vocabulary with a reference page offering eighteen terms. Each word is presented in bold lettering and accompanied by a definition and picture representation. Terms include number lines, supplementary angles,...
Lesson Planet

Vocabulary Representation (Grade 3)

For Students 3rd Standards
Never forget a math term with a reference sheet highlighting vocabulary found in a third grade curriculum. Three pages offer nineteen words each with a detailed definition and picture representation. Terms include ten frame, the...
2:20
Lesson Planet

Parallel and Skew Lines

For Students 9th - 12th Standards
Parallel lines are often incorrectly defined as lines that do not intersect. The instructor in a concept video explains the difference between parallel and skew lines. He also refers to the correct notation and symbols during the lesson.
Lesson Planet

Study Jams! Classify Quadrilaterals

For Students 3rd - 6th Standards
Face the vertex of two-dimensional shapes and discover what each figure requires as part of its classification. With one shape per slide, learners see what makes each shape special and compare it to others with similar qualities. 
Lesson Planet

Parallel and Perpendicular Lines Worksheet

For Teachers 7th - 11th Standards
Take the work out of worksheet and give young mathematicians time to practice with lines, systems of equations, and special lines. It is a great worksheet that includes questions on all the main topics of linear equations. 
1 In 1 Collection
EngageNY

Arcs and Chords

For Teachers 9th - 10th Standards
You've investigated relationships between chords, radii, and diameters—now it's time for arcs. Learners investigate relationships between arcs and chords. Learners then prove that congruent chords have congruent arcs, congruent arcs have...
1 In 1 Collection
EngageNY

Motion Along a Line – Search Robots Again

For Students 9th - 12th Standards
We can mathematically model the path of a robot. Learners use parametric equations to find the location of a robot at a given time. They compare the paths of multiple robots looking for parallel and perpendicular relationships and...
1 In 1 Collection
EngageNY

Parallel and Perpendicular Lines

For Students 9th - 12th Standards
Use what you know about parallel and perpendicular lines to write equations! Learners take an equation of a line and write an equation of a line that is parallel or perpendicular using slope criteria. They then solve problems to...
Lesson Planet

Parallel Lines Cut by a Transversal

For Students 8th Standards
Pupils study angle measurements between different types of angles associated with parallel lines and transversals. The independent practice asks pupils to identify the types of angles in a diagram and to determine the measure of angles. 
Lesson Planet

Lines and Angles

For Students 4th - 7th Standards
Why was the obtuse angle upset? Because it was never right! A valuable resource is loaded with background information on types of angles and lines. Learners review the characteristics of parallel, perpendicular, and intersecting lines,...
1 In 1 Collection
Lesson Planet

Unit 5 Math Vocabulary Cards (Grade 6)

For Students 6th Standards
Acute angle, line of symmetry, and vertex are a few terms you'll find in a set of 90 flashcards designed to reinforce math vocabulary. Included in the set are two types of cards; a word card printed in bold font, and a definition card...
Lesson Planet

Assessment For The California Mathematics Standards Grade 6

For Students 6th Standards
Test your scholars' knowledge of a multitude of concepts with an assessment aligned to the California math standards. Using the exam, class members show what they know about the four operations, positive and negative numbers, statistics...
Lesson Planet

Assessment For The California Mathematics Standards Grade 4

For Students 4th Standards
Have scholars show what they know with a 20-page assessment aligned to the California State Standards. The test covers concepts such as large and whole numbers, all four mathematical operations, fractions, decimals, geometric figures,...
Lesson Planet

Parallel and Perpendicular Lines Worksheet

For Students 9th - 12th Standards
With the focus being on parallel, perpendicular, or neither type, practice with three different types of problem solving. Learners start with a simple skill of determining the relationship between slopes and then work towards creating...
Lesson Planet

Slope of Parallel and Perpendicular Lines

For Teachers 8th - 10th Standards
Parallel or perpendicular? It's a slippery slope. This inquiry-based instructional activity focuses on the slope relationships between parallel and perpendicular lines. Class members follow the day-to-day layout of instruction activities...
Lesson Planet

Circle Folding

For Teachers 1st - 9th Standards
Your young mathematiciaans collaboratively brainstorm the geometric properties of a circle in this vocabulary rich, geometry lesson plan. Step by step a plethora of properties and shapes emerge as learners fold their circles to create...
2 In 2 Collections
Lesson Planet

Are They Similar?

For Teachers 9th - 11th Standards
Learners separate things that just appear similar from those that are actually similar. A diagram of triangles is given, and then a variety of geometric characteristics changed and the similarity of the triangles analyzed. Because the...
1 In 1 Collection
Lesson Planet

Module 7: Connecting Algebra and Geometry

For Teachers 8th - 10th Standards
The coordinate plane links key geometry and algebra concepts in this approachable but rigorous unit. The class starts by developing the distance formula from the Pythagorean Theorem, then moves to applications of slope. Activities...
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A Midpoint Miracle

For Teachers 9th - 12th Standards
Young geometers develop one of the fundamental properties of quadrilaterals (connecting side midpoints gives a parallelogram) in this short but thought-provoking exercise. Using a combination of hands-on techniques and abstract algebraic...
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Basic Geometry Terms

For Students 4th - 5th Standards
Set your pupils up to start on geometry by teaching them some introductory terminology. Pupils learn the terms by reading a short passage and looking at examples. They then respond to five questions related to the text.
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Geometric Figures: Teaching Masters and Study Link Masters

For Teachers 4th - 6th Standards
Help young mathematicians shape their understanding of geometry with this series of worksheets and activities. Starting with an introduction to line segments, lines, and rays, the first unit in this math series continues on to explore...
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Flippin' Proofs Parallel Lines Project

For Teachers 10th - 12th Standards
Learners will "flip" for this creative way to practice writing and explaining two-column proofs about parallel lines.  As they create their masterpiece, young geometers are led to consider overall proof characteristics as well as...
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Similarity and Right Triangle Trigonometry

For Teachers 10th - 12th Standards
Starting with similar triangles and dilation factors, this unit quickly and thoroughly progresses into the world of right triangle features and trigonometric relationships. Presented in easy-to-attack modules with copious application...
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Safe Crossings

For Teachers 7th - 11th Standards
Learners join a task force and learn, “It’s a tool not a toy”, and “safety first,” in this worthwhile geometry task where they are asked to collaboratively construct the plans for a pedestrian bridge that connects two walkways over a...
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Study Jams! Types of Lines

For Students 4th - 9th Standards
Get jamming with lines and sing along to this karaoke that reviews the main types of lines. Your learners can't forget the main properties of lines when they sing the chorus on the karaoke song after the included slide show. The slides...
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Find the Missing Angle

For Teachers 7th - 9th Standards
This one activity requires young geometers to pull together information they are currently learning with things they have learned previously. Here they rely on understanding something about parallel lines, alternative interior angles,...
4:55
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How Do You Find the Area of a Trapezoid?

For Teachers 6th - 12th
Trapezoids can be tricky. Break down the process of finding the area of a trapezoid with this video! Viewers are given information about the area formula and shown exactly how to plug in information, solve, and simplify. This is a...
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Electricity

For Teachers 9th
Each of these slides presents the basic scientific details and situations where charge, or static may appear. Handouts of the empty PowerPoint slides could be provided so that students could work through these examples and correctly...
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Parallelism Worksheet #2

For Students 6th - 9th
Parallel structure is tricky, even for many adults! Give your class extra practice with this two-page resource. For each of 16 sentences, they rewrite it using parallel structure. Do an example or two with them to give them confidence...
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Parallelism, Including Correlative Conjunctions and Comparisons

For Students 7th - 10th
After reading the first reference page about parallel structure using correlative conjunctions, young learners rewrite nine sentences with errors in parallelism. Even the strongest writers in your language arts class could benefit from...
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Parallelism (Unit 7-3200)

For Students 7th - 9th
How do you create parallel structure? Here, the first section details parallelism, providing many examples. The next two sections provide your class with practice opportunities. The first one requires learners to identify the sentences...
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Call it "Macaroni"

For Teachers 1st - 3rd
Who knew there were so many fun educational opportunities featuring pasta? Scholars read a brief informational text about the history of pasta (note that "macaroni" is spelled two different ways, so address this if kids are reading...
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Mirror, Mirror on the Wall: Reflections of Light

For Teachers 9th - 12th Standards
Why can we see our reflection in a window but not a brick wall? Young physicists learn the Law of Reflection and various light properties that help them answer this and other questions about reflection. Use the PowerPoint to introduce...
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Review Linear Equations

For Students 8th - 9th
Explore algebra I/algebra II with this series of worksheets. Pupils write linear equations in slope-intercept and standard form, graph linear equations, and apply linear equations to real world applications. The six-page worksheet...
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Angles, Lines, and Transversals

For Teachers 8th - 10th Standards
Geometers identify and determine angle pair relationships when two parallel lines are intersected by a transversal. They review the concepts of angles by watching streaming video clips online, read definitions of lines and angles from...
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Transversals and Angles - Homework 14.3

For Students 5th - 8th
Upper graders and middle schoolers use a diagram to give examples vertical angles, alternate interior angles, and alternate exterior angles, find the degree measure of multiple angles, and draw and label a pair of complementary vertical...
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Understanding the y-intercept 3

For Students 8th - 9th
In this understanding the y-intercept worksheet, students solve 13 various problems defining the y-intercept of a line using data tables. They complete the table that illustrates the relationship between the number of sides of a polygon...
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Basic Concepts - Reteach 14.1

For Students 4th - 6th
Learners draw and label 8 geometric figures when given the labels. Definitions of basic geometric figures are given. Some of the questions deal with parallel lines, perpendicular lines, and the vertex of angles and rays.
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Lines, Line Segments, Rays and Angles - Homework 15.1

For Students 4th - 5th
Here is an identifying lines, line segments, rays, and angles worksheet which has learners identify the figures by telling whether figures are right angles, less than a right angle, or greater than a right angle, identifying lines as...
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Lines to Design

For Students 4th - 6th
In this geometry worksheet, upper graders use pattern blocks as a basis for identifying lines, angles, and shapes. Then they compare and contrast properties of various two-dimensional shapes. Pupils also create a block quilt from paper...
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Lines and Angles

For Students 4th - 5th
Learners analyze the examples of lines and angles. They label 16 pictures of lines or angles with the correct term.
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Basics Concepts - Practice 14.1

For Students 4th - 6th Standards
Learners draw and label 12 different geometric figures which include lines, line segments, angles, and ray. They answer six questions where they are given labeled geometric figures and write the name and symbol for each figure. Pupils...
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Don't Mangle That Angle - Enrichment 14.1

For Students 4th - 6th Standards
Clever! Supposedly a strong wind blew the letters off of a classroom bulletin board, and now learners connect them according to directions listed. As a result, they end up drawing a line segment, ray, intersecting line, angles, and...
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Lines, Line Segments, Rays and Angles - Reteach 15.1

For Students 3rd - 5th
Upper graders answer four questions where they identify geometric figures as lines, line segments or rays. Next, they answer questions where they identify lines as parallel, intersecting, or perpendicular. Definitions and drawings of...
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Lines, Line Segments, Rays, and Angles - Practice 15.1

For Students 3rd - 5th Standards
Is it a line, line segment, ray, or angle? Identifying geometric figures is the focus. In addition to identification, learners recognize right angles or tell if an angle is less than or greater than a right angle. They tell if lines are...
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"Polly"gon Pockets

For Teachers 3rd - 5th Standards
Explore polygons with your elementary learners. Divide the class in 12 to configure the polygon puzzle before them. They list the attributes of each type of polygon they see, and if there's time, they jump on the interactive website...
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Points, Lines, and Line Segments - Reteach 16.1

For Students 3rd - 5th Standards
In this geometry worksheet, youngsters review a chart at the top of the page that includes the definitions of point, line, line segment, parallel lines, intersecting lines, and perpendicular lines. They apply the definitions as they name...
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Points, Lines, and Rays - Problem Solving 15.1

For Students 4th - 6th Standards
Here is a set of five word problems in which geometers draw and identify points, lines, segments, rays. They determine if lines are perpendicular or parallel. This is a concise, yet applicable worksheet to help learners grasp the...
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Math 7/8 Pre-Algebra Final Exam Review #3

For Students 6th - 9th
In this pre-algebra review worksheet, students solve 17 short answer and graphing problems. Students solve equations and inequalities. Students graph the solution to an inequality. Students find unknown angles of polygons and of two...
10:41
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Parallel Lines – Angles

For Students 6th - 12th Standards
Is there a resource that parallels the video? Scholars view a short video to review the types of angle relationships that exist when a transversal cuts two parallel lines. They watch as the narrator solves several problems involving...
3:29
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How Do You Find a Value for x that Makes Two Lines Parallel?

For Teachers 6th - 12th
So you have a transversal line intersecting two parallel lines and you are looking for a value that would make two corresponding angles congruent. You have all the information needed to write an equation to find the value. So write that...
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Parallel and Perpendicular Lines: Unity and Variety

For Teachers 4th
Combine math and art by getting your class create a painting with parallel and perpendicular lines. Youngsters design a picture using multiple lines in a variety of thickness and color. They find parallel and perpendicular lines in real...
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Points, Lines, and Line Segments - Practice 16.1

For Students 4th - 5th
Fourth and fifth graders use words and symbols to name 4 figures. They label lines as parallel, intersecting, or perpendicular in the next three questions before drawing three examples of their own. They complete two test prep question...
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Lines in the Alphabet Soup - Enrichment 16.2

For Students 4th - 5th
Elementary schoolers examine a bowl of alphabet soup and follow the directions to group the letters. They group letters that contain perpendicular, parallel, and non-perpendicular intersecting lines. They determine which letters have...
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Parts of an Angle

For Teachers 4th - 5th
Learners review the line segments and rays. In this identifying angles lesson, they define the word vertex and describe how angles are formed. Pupils show the parts of an angle and name them.
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Easy Worksheet: Equations of Lines

For Students 9th - 12th
The class solves 4 short answer problems. They write the equation of a line parallel to a given line passing through a point. Graph paper may be needed.
2:15
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Parallel Lines and Transversals

For Students 6th - 10th Standards
Eight is the lucky number of angles when a line crosses two parallel lines. Scholars watch a concise video in the Socratica Geometry series to learn about angles made by parallel lines and a transversal. Using corresponding and vertical...
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Parallel and Perpendicular Lines

For Students 9th - 11th Standards
Young geometers get some solid skills practice in evaluating slopes. Beginning with the basics of slope through two points and progressing through properties of parallel and perpendicular lines, the building of skills is gradual and...
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Geometry Worksheet II

For Students 7th - 10th Standards
Young geometers get practice with the algebra of angles in an extensive skills practice worksheet. Supplementary, complementary, and vertical angle relationships are used, along with parallel lines cut by a transversal and angle sum of a...
4:48
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What is the Triangle Sum Theorem?

For Teachers 6th - 9th
If you add the value of the three interior angles in a triangle will it equal 180 degrees? Yes it will. The instructor illustrates and proves the Triangle Sum Theorem. Follow closely as she explains her proof.
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Part I: Principle of Effective Writing

For Teachers Higher Ed
Designed for higher education, this 151-slide presentation focuses on effective writing techniques, specifically in scientific manuscripts. While the slides contain readable amounts of text (none are text heavy), consider spreading this...
7:12
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SAT Prep: Test 8 Section 8 Part 3

For Students 9th - 12th
The final video of the SAT practice series takes students through increasingly complicated algebra and geometry problems, but Sal works steadily through each mathematical process. At the end of the video he tells students that they are...
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I Can Name That Angle in One Measure! Applications

For Students 8th - 10th Standards
Learners determine angle measurement by identifying properties of interior angles, exterior angles, vertical angles and supplementary angles. They justify their answers. This two-page worksheet contains 23 problems.
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Caley Table for the Symmetries of a Square

For Students 8th - 11th
Middle and high schoolers complete Caley's table to indicate rotating a square 90, 180, and 270 degrees. They also reflect a square across the vertical and horizontal line. This one-page worksheet contains eight movements.
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Gradients of Parallel Line Segments

For Students 7th - 10th
In this gradient instructional activity, students draw line segments and determine if they are parallel. They plot points on a coordinate plane and calculate the gradient of each created line. This five-page instructional activity...
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Ruler and Compass Constructions

For Teachers 4th - 5th
Fourth and fifth graders examine how to construct perpendicular lines and to bisect angles using rulers and compasses in this unit of lessons. They design a number of polygons using these methods.
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Angles and Geometry Activity

For Teachers 3rd - 6th
Get your pupils out of their seats by having them create a cheer complete with arm movements that demonstrate various angles. Working in small groups either during class or recess, young geometers are tasked with having to create a cheer...
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Identifying Perpendicular, Parallel and Intersecting Lines

For Teachers 3rd - 4th Standards
Mathematicians explore perpendicular, intersecting and parallel lines. In this geometry lesson, they view a map and identify the intersections. They also identify the parallel avenues on the map. This is a nice lesson that incorporates...
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Other Equations of Lines

For Teachers 8th - 9th
In this algebra worksheet, students find equations for 4 lines when given their slope and one point on the line. They write two linear equations when given two points on a line. Students analyze the equations of 3 sets of linear...
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Series or Parallel?

For Teachers 9th - 12th
Emerging electricians extend mental models of light bulbs and resistors in series and or in parallel circuits to include the connection of photovoltaic cells in arrays. They investigate open circuits, using a DC voltmeter, a light...
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Electrical Circuits

For Teachers 8th - 10th
By following this PowerPoint, your class will gain many of the details needed to build correct and safe circuits.  The details in this clear set of slides are concise and are given in a logical sequence. The many examples will assist in...
4:52
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What is a Quadrilateral?

For Teachers 5th - 10th
What's so special about quadrilaterals? There are five special types, yes, five. Can you name them? The instructor in this video diagrams and illustrates the special types of quadrilaterals and explains what makes each one special.
4:53
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How Do You Write an Equation of a Line in Slope-Intercept Form If You Have One Point and a Parallel Line?

For Teachers 8th - 9th
This may seem like a complicated problem, finding an equation that is parallel to the given equation and passing through a given point, and writing it in slope-intercept form, but it's really not. It's just a matter of rearranging...
1:42
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What Are Parallel Lines?

For Teachers 8th - 9th
What kind of lines have equal slopes, equal incline or decline, and equal rise over run? Yes! Parallel lines. What are parallel lines? They are lines on a graph that go on and on and on forever and never touch each other. Watch this...
3:56
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SAT Prep: Test 6 Section 9 Part 1

For Students 9th - 12th
Word problems on the SAT can be some of the trickier questions. In this practice session from page 743 in The Official SAT Study Guide, Sal demonstrates how to read word problems as algebraic expressions, writing the necessary equation...
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Semester 1 Review for Geometry final

For Students 10th
For this geometry worksheet, 10th graders solve problems that are based on the topics covered in a first semester geometry class, including, linear equations and the equations of parallel and perpendicular lines, the logic of geometry,...
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Supplementary, Complementary, And Vertical Angles

For Teachers 8th - 10th
Middle and high schoolers construct parallel lines cut by a transversal using the Geometer's Sketchpad. They measure angles formed, compare angle measurements, explore various activities on Geometer's Sketchpad, and complete a worksheet.
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Parallel and Perpendicular Lines

For Teachers 3rd - 4th
Here is a parallel and perpendicular lines worksheet which has learners respond to 10 questions that require them to identify lines and draw lines.
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Lines, Lines, Everywhere

For Teachers 8th - 10th
Students explore linear equation suing real life scenarios. In this algebra lesson, students find the slope and intercept of a line. They create table of values to plot their graph and draw conclusions.
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Points, Lines, and Line Segments - Homework 16.1

For Students 4th - 5th
For this geometry worksheet, students complete a homework assignment in which they name 3 lines and line segments. They write parallel, intersecting, or perpendicular, to describe the relationships between 4 pairs of lines. They draw an...
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Transitions

For Teachers 7th - 12th Standards
Transitions are the focus of a presentation that includes information about the importance of transitions and types of transitions. Included is a list of commonly used transition words.
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2-D and 3-D Presents at Pedro's Party

For Teachers 5th
Fifth graders draw 2-D and 3-D shapes. They sketch and label geometric figures with correct terminology, then explore parallel and perpendicular lines. Pupils sort and classify shapes drawn.
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Geometry Lesson 7: Line Segments And Angles

For Teachers 4th
Fourth graders examine and identify line segments and angles using dot paper to draw them. They look at vertical, horizontal, intersecting, parallel and perpendicular lines, draw right angles and angles that are greater than and less...
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UWF Writing Lab: Rules of Thumb for Parallelism

For Teachers 8th - 11th
Parallelism makes your writing pleasing, enjoyable, and correct - and with this presentation, parallelism is within your grasp. Thirty-seven slides show young grammarians all the different applications of parallelism, from compound...
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Systems of Equations

For Teachers 8th - 9th Standards
This is a large unit on the study of the systems of linear equations, solving and graphing. Understanding solutions graphically, and algebraically, learners solve equations by graphing, substitution, and elimination. Real-world problems...
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Constructions Homework

For Students 10th - 12th
In this constructions worksheet, students construct equilateral triangles, lines through a given point, the center point of a circle and a circle through given points.  This four-page worksheet contains 8 problems.
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The Slope of Parallel and Perpendicular Lines

For Students 9th - 11th
In this Algebra I/Algebra II instructional activity, students examine slope to determine if the given lines are parallel or perpendicular.  Students determine the equation of lines that are either parallel or perpendicular to the given...
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Algebra I - Worksheet G12: Graphing Lines

For Students 9th - 12th
In this graphing lines worksheet, students graph 28 lines given various data.  Students graph lines given two points, a point and slope, and a line perpendicular or parallel to a point.
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Algebra II Test Chapter 3: Slope & Functions

For Students 10th - 12th
In this slope and functions worksheet, students determine the slope of a line.  They identify functions and determine an equation of a line that is parallel or perpendicular to given points.  This three-page worksheet contains 21 problems.
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Angles Formed By Parallel Lines

For Teachers 6th - 12th Standards
Young scholars explore the concept of angles formed by parallel lines.They graph two parallel lines cut by a transversal, then measure the angles formed by the transversal and record the data in a table. Learners make conjectures about...
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Writing Equations for Parallel Lines

For Teachers 8th - 11th Standards
Acquaint your class with the concept of parallel lines. Learners watch a PowerPoint presentation about how to write equations of parallel lines. Their understanding of linear equations and slope is taken a step further by the exercises...
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Linear Functions

For Students 9th - 11th
In this linear function worksheet, students examine graphs and determine the slope, the y-intercept and the equation of a line. They identify parallel and perpendicular lines. This two-page worksheet contains 3 multi-step problems.
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5.6 Parallel and Perpendicular Lines

For Students 9th - 11th
For this parallel and perpendicular lines worksheet, learners find the slope of a line that is perpendicular or parallel to a given line. They write a linear equation in point-slope form that fits given parameters. This one-page...
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Practice Masters Level B: Parallel & Perpendicular Lines

For Students 8th - 10th
In this parallel and perpendicular line worksheet, students write a linear equation in the point-slope form to meet given conditions. They find the slope of a line. This one-page worksheet contains 17 problems.
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Similarity

For Students 10th
In this similarity worksheet, 10th graders solve and complete 14 different types of problems. First, they find the length of each segment given two lines parallel. Then, students find the measure of each segment of a parallelogram...
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Geometry: Assignment #8

For Students 8th - 10th
In this geometry instructional activity, students write the equation of the line described in slope-intercept form for 7 questions. They then answer 3 more questions in which they use the drawing of a triangle to determine the equations...
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Cells in Series and Parallel

For Students 9th - 12th
In this cells in series and parallel worksheet, high schoolers connect dry cells in a series and in parallel. Students chart their observations in a given table. High schoolers answer several questions demonstrating their understanding...
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Slopes Puzzle

For Students 8th - 9th
In this slopes puzzle worksheet, learners solve and complete 16 different problems that include determining various slopes of equations. First, they cut apart each of the pieces shown. Then, students use the slopes of each linear...
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Analytic Geometry

For Students 9th
In this analytic geometry worksheet, 9th graders graph and solve 13 different types of problems that include determining whether equations are linear to matching given equations to their corresponding equation in the second column....
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Dichotomous Keys

For Teachers 7th - 8th
Students define the word dichotomous and explain why a dichotomous key is a useful tool in identifying different species. Then they look up words they are unfamiliar with or mollusk reference books so students can learn the names of...
3:49
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Parallel Lines

For Students 7th - 9th
Here is fairly basic video that takes three equations, each written in slope-intercept form, with the goal of determining whether the lines are parallel.  Sal graphs each of the equations on the same coordinate plane to show how their...
5:15
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Angles of Parallel Lines 2

For Students 9th - 10th
Providing an exploration of parallel lines, this resource requires students to not only practice calculations, but also to analyze angles. By asking viewers to decide whether two lines are parallel based upon the information given, this...
5:15
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Angles of Parallel Lines 2

For Students 9th - 10th
Providing an exploration of parallel lines, this resource requires students to not only practice calculations, but also to analyze angles. By asking viewers to decide whether two lines are parallel based upon the information given, this...
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Quiz: Angles with Parallel Lines

For Students 7th - 8th
Middle schoolers identify all pairs of angles formed from parallel lines and a transversal. They use the definitions of alternate interior, alternate exterior and corresponding angles to determine the value of given angles. This one-page...
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Parallel Lines

For Students 7th - 8th
Based on two sets of parallel lines intersected by a transversal, your young geometers determine the measures of 10 angles by applying the definitions of vertical, corresponding, alternate interior, and alternate exterior angles. When...