Interactive
CK-12 Foundation

#### Families of Lines: Room in Perspective

For Students 8th - 10th Standards
Get a perspective of lines that share a point. The interactive displays a family of lines that share the same y-intercept. Individuals can find the equations of the lines by moving the line displayed and find what is common about all the...
Interactive
CK-12 Foundation

#### Equivalent Fractions: Number Line

For Students 3rd Standards
Arrange improper fractions on a number line to determine the equivalency to whole numbers. The number line starts at -4 and ends at 4, while users must turn the improper fraction into a proper fraction in order to place it on the number...
Interactive
CK-12 Foundation

#### Identify Functions and the Vertical Line Test: The Vertical Line Test

For Students 9th - 12th
There's no easier test than the vertical line test. Learners drag a vertical line across the graphs of several relations in an interactive. They answer a set of challenge questions that focus on whether the graphs represent functions.
Interactive
CK-12 Foundation

#### Vectors as Directed Line Segments: Directed Line Segment

For Students 9th - 12th Standards
Direct your class' attention to directed line segments. The interactive resource allows pupils to create segments with specific endpoints. Scholars plot the initial and terminal points to determine the direction and magnitude of the...
Interactive
CK-12 Foundation

#### Vertical Line Test: Exploration

For Students 8th - 9th
What do vertical lines have to do with functions? Individuals slide a vertical line through four different graphs. They use that vertical line test to determine if the graphs represent functions.
Interactive
CK-12 Foundation

#### Tangent Line Approximation: Estimating Square Roots

For Students 11th - Higher Ed
Estimating a square root is as easy as evaluating a linear equation. Using the derivative of the square root function, pupils calculate an estimation of square roots. Class members determine the equation of the tangent line at the value...
Interactive
CK-12 Foundation

#### Differences of Integers Using a Number Line: Football Game

For Students 6th Standards
Make football a math sport! Move the football player (red dot) along the sideline (number line) to see how many yards (positive and negative integers) they've traveled to the other team's end zone.
Interactive
CK-12 Foundation

#### Broken-Line Graphs: Heating Curve of Water

For Students 7th - 10th Standards
Examine the unique graphs coined broken-line graphs. Using the phase change of water for data, learners answer questions related to the temperature and energy at different times in the cycle of the phase change. Questions focus on the...
Interactive
CK-12 Foundation

#### Line Graphs to Display Data Over Time: Strawberry Competition

For Students 6th - 8th Standards
Take the tediousness out of graphing. Using the interactive tool, learners can efficiently create a line graph from a set of data. They then use the graph to answer questions about specific trends in the data.
Lesson Plan
Curated OER

#### What Is Hyperbolic Geometry?

For Teachers 9th - 10th
Ninth graders discuss the concept of hyperbolic geometry. They complete Internet geometry activities and write essays comparing and contrasting hyperbolic geometry to Euclidean geometry.
Handout
McGraw Hill

#### 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,...
Lesson Plan
Virginia Department of Education

#### 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...
Instructional Video3:58
CK-12 Foundation

#### 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...
Worksheet
Curated OER

#### Semester 1 Review for Geometry final

For Students 10th
In 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,...
PPT
Curated OER

#### Points, Lines, Segments, and Rays Lesson 15-1

For Teachers 4th - 5th Standards
Some of the most important vocabulary in the study of geometry is presented here. In this PowerPoint, learners view the definitions for points, lines, segments, and rays. The definitions and graphics are clear, and kids are also coached...
Instructional Video1:59
Curated OER

#### What are the Endpoints of a Line Segment?

For Teachers 6th - 12th
A simple video on how to identify the endpoints of a line segment. Have your class watch this video to clarify any confusions about endpoints. This could be used as extra help for learners who are having difficulty, or as a supplement to...
Instructional Video3:46
Curated OER

#### What are Skew Lines?

For Teachers 6th - 10th
Skew lines? What? By definition, skew lines are lines on different planes that never intersect. Watch this video and get an explanation along with a visual diagram.
Lesson Plan
Curated OER

#### Perpendicular Lines

For Teachers 3rd - 6th
In this perpendicular lines practice worksheet, learners find and list examples of perpendicular lines at home, at school, and outside.
Worksheet
Curated OER

#### Trace a Line of Symmetry

For Students 3rd - 4th
In this lines of symmetry worksheet, young math whizzes analyze pictures of eight common objects and draw a line of symmetry for each.
Worksheet
Curated OER

#### 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...
Handout
El Paso Community College

#### 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 Plan
National Council of Teachers of Mathematics

#### Stitching Quilts into Coordinate Geometry

For Students 8th - 11th Standards
Who knew quilting would be so mathematical? Introduce linear equations and graphing while working with the lines of pre-designed quilts. Use the parts of the design to calculate the slope of the linear segments. The project comes with...
Lesson Plan
Curated OER

#### Parallel Lines in Everyday Life

For Teachers 3rd - 6th
In this identifying parallel lines worksheet, students discover examples of parallel lines at school, home, and outside and list them on a chart. Students write at least 10 short answers.
Worksheet
Curated OER

#### Are the Dotted Lines, Lines of Symmetry?

For Students 3rd - 5th
Here is a geometry skills practice worksheet in which learners respond to eight questions that require them to identify lines of symmetry.