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Activity
Noyce Foundation

Surrounded and Covered

For Students K - 12th Standards
What effect does changing the perimeter have on the area of a figure? The five problems in the resource explore this question at various grade levels. Elementary problems focus on the perimeter of rectangles and irregular figures with...
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Worksheet
Yummy Math

A Cardioid for Valentine’s Day

For Students 7th - 12th Standards
It's Valentine's Day in geometry class! Celebrate the day of love with a heart-themed activity in which young mathematicians create a cardioid on polar graph paper.
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Assessment
Concord Consortium

Swimming Pool II

For Students 10th - 12th Standards
Combine geometry and algebra concepts to solve a modeling problem. Young scholars consider the effect surface area has on volume. They write a cubic function to model the possible volume given a specific surface area and then...
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Assessment
Concord Consortium

Isosceles Triangle Spaces

For Students 7th - 10th Standards
How many different types of triangles can your class name? A discovery lesson guides learners through an exploration of the different triangle types and the relationships between their angles and sides. Using coordinate geometry,...
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Instructional Video9:11
Corbett Maths

Algebraic Proof

For Students 8th - 12th Standards
Proofs do not exist only in geometry. The video shows the class different ways that proofs appear in algebra. Pupils work through a variety of algebraic proofs involving the divisibility of an algebraic expression or whether it is even...
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Instructional Video10:31
Corbett Maths

Transformations of Graphs

For Students 9th - 12th Standards
Geometric transformations in algebra ... what? Given four transformations, the narrator explains how each affect the graph of the original function. The transformations involve translations and reflections, both horizontally and...
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Unit Plan
Radford University

Next Top Model

For Students 9th - 12th Standards
Create a world of similar models. The geometry and measurement unit uses real-world scenarios to create models of familiar buildings and rooms. Scholars work with blueprints and scale models to compare areas and volumes between the...
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Unit Plan
Radford University

Natural Disaster Recovery and Quadrilaterals: Fencing and Roofing Materials

For Students 9th - 12th Standards
Storm into a better understanding of geometry. Using a tornado as a backdrop, scholars practice their skills finding perimeters and areas of rectangles. Learners apply their knowledge of the Pythagorean Theorem to find missing sides of...
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Unit Plan
Radford University

Fun with Solids

For Teachers 9th - 12th Standards
Geometry is all around us—if we're only willing to look. The final three activities of the Fun with Solids unit continue work on surface area and volume. For lesson three, scholars investigate the formulas for spheres and solve a problem...
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Unit Plan
Radford University

Google Earth Trip

For Teachers 9th - 12th Standards
A trip around the world sounds nice, but for now we'll just have to make do with Google Earth. Pupils use pictures of landmarks to apply geometry concepts. They determine whether each building has bilateral or rotational symmetry, search...
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Unit Plan
Radford University

Building a House

For Teachers 9th - 12th Standards
Ever dream of becoming an architect? Here's your chance to give it a try. After reviewing facts about triangles and quadrilaterals, pupils learn about the basics of architecture by talking to an architect or housing expert. They use...
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Performance
Radford University

Kite Project

For Teachers 7th - 12th Standards
Let the class' knowledge of geometry soar like the kites they create. After researching the history and science of kites, learners draw up a blueprint for their own kites. They then calculate the areas and perimeters based on the scale...
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Lesson Plan
Curated OER

Coordinate Geometry Battleship Lesson Plan

For Teachers 8th - 10th
Students play a "Battleship" type of game to practice graphing on a coordinate plane. For this coordinate graphing lesson, students select a point on their grid to place their "battleship." It the opposing team misses the ship, the...
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Worksheet
Curated OER

Geometry Take Home Question

For Students 9th - 12th
In this triangles, parallelograms, and kites learning exercise, students solve 4 short answer problems. Students find the area of the given triangle. Students construct parallelograms and kites by cutting out and manipulating the given...
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Lesson Plan
Curated OER

What's the Best Deal?

For Teachers 3rd - 5th
Students explore number sense by solving consumer math problems. In this pattern identification lesson, students analyze a list of numerical and geometric patterns while predicting the future outcome. Students utilize inference skills to...
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Lesson Plan
Curated OER

Volume of Rectangular Prisms: Algebra/Geometry Institute Summer 2009

For Teachers 9th - 10th
Students find the volume of rectangular prisms.  In this volume lesson, students use a formula to find the volume of rectangular prisms.  They discuss the definition of volume and draw rectangular prisms.  Students...
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Lesson Plan
Curated OER

Pythagorean Theorem: Algebra/Geometry Institute Summer 2010

For Teachers 7th - 9th
Learners solve Pythagorean theorem problems.  in this Pythagorean theorem instructional activity, students read real world problems, draw diagrams, and then solve with the Pythagorean theorem.  They define hypotenuse and...
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Lesson Plan
Curated OER

Volume Review

For Teachers 5th - 8th
Learners investigate the concepts of volume for rectangular prisms and spheres. They measure the volume of one balloon and then consider how many breaths it would take to fill the room with balloons. The rectangular prism being measured...
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Lesson Plan
Curated OER

Isosceles Triangle Theorem

For Teachers 8th - 10th
In this geometry worksheet, students differentiate between regular triangles and isosceles triangles. They apply the converse theorem and the vertex angle. There are eleven questions with an answer key.
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Lesson Plan
Curated OER

Isosceles Triangle Theorem

For Teachers 8th - 9th
In this geometry worksheet, students differentiate between isosceles and regular triangles. They calculate the area and perimeter of the triangle. There are eleven questions with an answer key.
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Lesson Plan
Curated OER

Simplifying Radicals

For Teachers 10th
In this geometry worksheet, 10th graders simplify radicals.  The one page worksheet contains twelve problems.  Answers are not included. 
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Worksheet
Curated OER

Points, Lines, and Line Segments - Homework 16.1

For Students 4th - 5th
In 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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Worksheet
Curated OER

Explore Perimeter and Area - Homework 18.1

For Students 3rd - 6th
In this geometry instructional activity, students complete a homework assignment in which they draw rectangles that have the same area but different perimeters and vise versa. They draw a rectangle with a given area and perimeter.
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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.

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