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Worksheet
Curated OER

Special Segments in Triangles

For Students 10th
In this special segments in triangles activity, 10th graders solve 6 various types of problems related to determining types of segments found in triangles. First, they find a segment if the line parallel is a median or an altitude. Then,...
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Worksheet
Curated OER

Graphing Trig Functions

For Students 11th
In this graphing trigonometric functions worksheet, 11th graders solve and complete 10 various types of problems. First, they graph each functions as shown. Then, students find the domain in each given function. In addition, they find...
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Lesson Plan
Curated OER

Triangle Island

For Teachers 9th - 12th
Students calculate the altitude of triangles.  In the web based lesson, students explore the interior distance from a given point in a polygon to its side.  They compute the sum of these lengths. Students read life application problems...
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Worksheet
Curated OER

Complementary and Supplementary Angles

For Students 10th
In this complementary and supplementary angles worksheet, 10th graders solve and complete 23 various types of problems. First, they supply a reason to justify each statement in the given sequences. Then, students find the measure of each...
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Lesson Plan
Curated OER

Bisecting Angles and Segments

For Teachers 9th - 12th
Learners bisect angles and segments using a mira. They measure the original angles and segments and the angles and segments formed by bisecting to better see the relationship between them.
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Lesson Plan
Curated OER

The Root is Right

For Teachers 9th - 11th
Students find the roots of an equation. In this roots lesson plan, students define the bisection method algorithm used to find the roots of an equation. They identify the margin of error in this process.
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Instructional Video2:01
Corbett Maths

Construct a 45 Degree Angle

For Students 8th - 11th Standards
Create a 45-degree angle without bisecting an angle. A video shows a method to construct a 45-degree angle without needing to bisect a right angle. By constructing an isosceles right triangle, the presenter constructs a 45-degree angle...
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Lesson Plan
West Contra Costa Unified School District

Expository Writing in Math

For Teachers 9th - 12th Standards
Pupils engage in an activity where one partner reads directions while the other follows those directions to complete a math task (such as bisecting an angle). As a reflection, they examine products to see what information the best...
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Instructional Video1:54
Corbett Maths

Perpendicular Through a Point on a Line

For Students 8th - 11th Standards
Use one construction to complete a second. The short video shows how to incorporate the steps of a perpendicular bisector to create a perpendicular to a point on a line. With their own straightedges and compasses, classmates then...
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Instructional Video4:47
Corbett Maths

Construct a 30 Degree Angle

For Students 8th - 11th Standards
Split it down the middle. Using the tools of geometric construction, the video shows two different methods of constructing a 30-degree angle. The first method bisects an angle of an equilateral triangle. The second uses the diagonal of a...
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Lesson Plan
Curated OER

Geometry Journal: Isosceles Triangles

For Teachers 10th - 12th
In this isosceles triangles worksheet, students justify and determine the symmetry of an isosceles triangle. They explore the bisector of rectangles. This three-page worksheet contains two problems. Answers are listed on page three.
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Lesson Plan
Curated OER

Investigating a Point on an ANgles Bisector

For Teachers 7th - 9th
Students investigate points and angle bisectors. In this geometry lesson, students define angles, bisectors and perpendicular bisectors. They analyze angles and bisectors using Cabri software.
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Worksheet
Curated OER

Midpoint

For Students 7th
In this midpoint worksheet, 7th graders solve 30 different problems related to determining the midpoint in a series of numbers. First, they identify and construct basic elements of various geometric figures. Then, students determine the...
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Worksheet
Curated OER

Geometry Proofs

For Students 10th
In this geometry proofs worksheet, 10th graders solve and complete 6 different problems that include various proofs. First, they prove a triangle has equivalent angles as given. Then, students prove two angles supplementary as described.
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Lesson Plan
Curated OER

Shot Put Arc

For Teachers 6th - 8th
Students complete Part A: Dissecting a Circle. They generate their own chords within the circle. Students measure the various parts of the arc in the shot put pit. The first two measurements, the chord and distance from the midpoint of...
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Lesson Plan
Curated OER

Approximating Roots of Polynomials

For Teachers 7th - 9th
Students use the bisection method to approximate the roots of a polynomial. They evaluate functions for a given point, graph linear and quadratic functions, and recognize the elements of polynomial expressions.
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Worksheet
Curated OER

Transformations and Congruence

For Students 10th
In this transformations and congruence worksheet, 10th graders solve and complete 5 different types of problems. First, they calculate the length of a line giving their answer in 3 significant figures. Then, students prove that two...
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Worksheet
Curated OER

Midpoint of a Line Segment

For Students 10th
In this line segment worksheet, 10th graders identify and solve 10 different problems that include determining the midpoint of a line segment in each. First, they determine the midpoint of a segment that connects two points. Then,...
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Worksheet
Curated OER

Geometric Concepts and Polygons

For Students 9th - 11th
In this geometry worksheet, students identify the altitude, perpendicular bisector, median, angle bisector and the area of different polygons. There are 33 problems.
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Lesson Plan
Curated OER

Patterns, Patterns, Patterns

For Teachers 3rd - 6th
Create geometric art in your classroom. Learners use a ruler to mark lines on their paper, they then trace a lid to create a series of circles. They color in each circle using two tones or colors to create an interesting visual pattern. 
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Printables
1
1
Houghton Mifflin Harcourt

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...
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Interactive
CK-12 Foundation

Midpoint and Segment Bisectors: The Midpoint Formula

For Students 9th - 12th Standards
Let's meet in the middle. Given two points on the coordinate plane, pupils use the interactive to find the midpoint. The interactive provides a graphical display of the midpoint and the midpoint formula with the coordinates of the...
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Interactive
CK-12 Foundation

Midpoint and Segment Bisectors: Finding Treasure with Geometry

For Students 7th - 9th Standards
Send your class on the hunt for a buried treasure and apply geometry skills along the way. An engaging lesson uses direction and midpoint locations to find the location of a treasure. Videos provide background information to complete the...
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Interactive
CK-12 Foundation

Midpoint and Segment Bisectors: Midpoint Map

For Students 9th - 12th Standards
Discover how to find a midpoint with a conceptual exploration. Scholars manipulate a point to determine the location of a midpoint on a straight line distance between two locations. Later questions extend to determine the location of...

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