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Lesson Plan
Curated OER

Geometric Shapes

For Teachers 5th - 7th
Students identify polygons.  In this geometric shape lesson, students explore the characteristics of polygons.  They identify polygons, and classify triangles according to their sides and angles.  Students create a poster representing...
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Lesson Plan
Curated OER

Special Triangles and Circles

For Teachers 9th - 11th
Students investigate special triangles and circles. In this geometry instructional activity, students construct a perpendicular bisector and discuss angles of a triangle. They find the angle bisectors, vetex and the types of circle...
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Lesson Plan
Curated OER

Triangles Introduction

For Teachers K - 3rd
Students explore geometry by drawing various shapes in class. In this triangle characteristics lesson plan, students identify the attributes that classify a shape as a triangle and practice using their bodies to create triangles in...
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Lesson Plan
Curated OER

Pythagorean Theorem: Triangles and Their Sides

For Teachers 8th - 10th
Learners investigate triangles and their relationship to each other. In this geometry lesson, students solve right triangles using the properties of the Pythagorean Theorem. They differentiate between right, acute, straight and oblique...
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Lesson Plan
Curated OER

Triangles, Triangles, Triangles

For Teachers K
Pupils view several different types of triangles. They discuss attributes of a triangle with a partner. Students use a straw cut into pieces to create a triangle. They complete a Triangle Hunt worksheet (teacher created). Pupils search...
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Lesson Plan
Willow Tree

Common Geometric Figures

For Students 8th - 11th Standards
Geometry could be called the study of figures. An overview of the figures found in a typical geometry course contains a study of different triangles, quadrilaterals, and regular polygons. 
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Lesson Plan
Curated OER

Personal Body Types

For Teachers 9th - 12th
High schoolers become familiar with four major body types; assess their own bodies, and complete an assignment showing which styles and design details would look best on different body types.
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Lesson Plan
Curated OER

Twenty-Five Measures of the Angles of a Triangle Problems

For Teachers 9th - 10th
For this triangle worksheet, students calculate the measures of the angles or the sums of the measures of the angles in twenty-five triangle problems and hands-on activities.  The solutions are provided.
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Lesson Plan
Curated OER

Constructing Midsegments of Triangles

For Teachers 9th - 10th
Learners construct midsegments. In this geometry instructional activity, students make conjectures and apply properties of triangles to solve problems. They complete an activity on the computer.
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Lesson Plan
Curated OER

Understanding the Epidemiologic Triangle through Infectious Disease

For Teachers 7th - 10th
Learners examine the epidemiologic triangle. For this disease lesson, students discuss infectious disease as they study how they spread and discover their families' experiences with them. Learners research Internet sites to complete...
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Lesson Plan
Curated OER

Angles in Triangles

For Teachers 8th
Eighth graders translate word problems using mathematical ideas. In this geometry lesson plan, 8th graders identify angles of triangles using equations and the triangle sum theorem. They create angles with a protractor and straight edge.
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Lesson Plan
Curated OER

Optical Illusion

For Teachers 8th - 10th
Students practice creating optical illusions as well as discerning how perception of information may change its characteristics. They distinguish between an equilateral triangle, endpoints, vertices's, and segments of triangles. The...
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Lesson Plan
Curated OER

I. M. Pei and the Geometry of the NGA

For Teachers 5th - 8th
Students compare design elements in neoclassical and modern architecture. They review knowledge of triangles and quadrilaterals and design a geometric pattern using Pei's polygons They create a city plan using a variety of lines and...
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Lesson Plan
Curated OER

What is Fire?

For Teachers 1st - 2nd
Students conduct an experiment.  For this fire lesson, students view an experiment where they learn the conditions needed to keep a fire burning.  Students discuss the experiment and learn about the fire triangle.
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Lesson Plan
Curated OER

Pythagorean Theorem Spreadsheet

For Teachers 6th - 8th
Studetns use a spreadsheet to organize data on the sides of a triangle. They use the Pythagorean Theorem and the If then spreadsheet function to decide whether the three sides determine a right triangle. Young scholars work individual...
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Lesson Plan
Curated OER

Shapes and Introduction to Geometry

For Teachers 2nd - 4th
Students make a quilt. In this geometry lesson, students discuss patchwork quilts and learn some different geometric shapes and patterns that are commonly used. Students explore designs with triangles and squares and then make their own...
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Lesson Plan
Curated OER

Figure Analysis

For Teachers Higher Ed
Students identify the importance of the Principles and Elements of design through self-analysis and sketching clothing appropriate for their body type. They write the actual color name on a line of the included sheet, then describe why...
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Lesson Plan
Curated OER

The Odyssey - By Homer

For Teachers 8th - 10th
Students read and interpret the epic poem The Odyssey by Homer. They interlock this poem to other spectacular people or events such as Amelia Earhart and the Bermuda Triangle. A vast array of excellent assignments are given within this...
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Lesson Plan
Curated OER

Travel Triangles

For Teachers 8th - 11th
Students demonstrate and understanding of the three types of angles using triangles and quadrilaterals. In this angles lesson plan, students learn about acute, obtuse and right angles. They use cut-outs to find the areas of triangles and...
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Lesson Plan
Curated OER

Types by Texture: Soil Isn't a Dirty Word

For Teachers 2nd
Second graders experiment with different types of soil to find the texture. In this types of soil experiment, shake a jar of soil and water and record the settling of the soil. Students record again after 3-4 hours and note the level...
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Lesson Plan
Curated OER

Binomial Expansion

For Teachers 11th - Higher Ed
In this binomial expansion worksheet, students solve and complete 81 various types of problems. First, they find the given sum and evaluate each factorial notation. Then, students expand each binomial and write only the coefficients....
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Lesson Plan
Curated OER

Triangle Explorer

For Teachers 3rd - 5th
Students calculate the area of triangles using a variety of materials including computer applets.
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Lesson Plan
Curated OER

Triangle Explorer

For Teachers 3rd - 6th
Students compute the area of triangles in a computer program. In this measurement lesson plan, students complete 5 easy, 5 medium, and 5 hard problems.
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Lesson Plan
Cornell University

Bridge Building

For Teachers 3rd - 8th Standards
Bridge the gaps in your knowledge of bridges. Individuals learn about bridge types by building models. The activity introduces beam bridges, arch bridges, truss bridges, and suspension bridges.

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