Lesson Plan
Curated OER

Squares to Compare

For Teachers 3rd - 4th
Students investigate how to draw and classify two and three dimensional figures (squares, triangles, rectangles.)
Lesson Plan
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Parallel-o-Home

For Teachers 9th - 12th
Students investigate the usage of parallel and perpendicular shapes in the real world. In this geometry lesson, students investigate shapes for properties that are related to the real world. They relate all the properties of shape tot he...
Lesson Plan
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Strongest Polygon

For Teachers 9th - 12th
Students define and identify shapes by name. In this geometry lesson, students construct, identify and compare polygons based on the number of sides. They classify each shape based on their angle sum theorem.
Lesson Plan
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Geometry Flip Book

For Teachers 3rd - 5th
Students investigate the concepts of geometry that can be grouped into a flip book that can be used for teaching and review purposes. They define the differences between two and three dimensional figures. Also polygons are reviewed and...
Lesson Plan
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Equilateral Triangles

For Teachers 4th - 5th
Learners examine the attribute of equilateral triangles. In this equilateral triangle lesson, students examine a number of paper triangles to determine how they are classified. They determine how triangles are depicted in Navajo rugs.
Lesson Plan
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Types of Triangles

For Teachers 1st - 2nd
Young scholars classify triangles by the length of their sides. In this geometry lesson, students use a white board to demonstrate the angles of various triangles. Young scholars construct an equilateral, isosceles, and a scalene triangle.
Lesson Plan
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Pyramids with Basic Bases

For Teachers 4th - 5th
Students explore pyramids. In this math lesson, students discuss where they have seen examples of pyramids. Students classify pyramids as three-dimensional figures and identify their attributes.
Lesson Plan
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Scalene Triangles

For Teachers 5th
Fifth graders identify and classify scalene, equilateral, and isosceles triangles. In this triangle lesson, 5th graders define the different attributes of 3 types of triangles and sort them by descriptions and...
Lesson Plan
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Solid Figures

For Teachers 9th - 11th
Students investigate solids. In this geometry lesson, students use toothpicks and gum drops to solve problems. They create visuals to help them see what is happening to the shapes.
Lesson Plan
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Problem Solving Using Pattern Blocks

For Teachers 3rd - 8th
Students use pattern blocks to create a figure that is described to them and establish a pattern based on the description of the geometric figure. In this pattern blocks lesson plan, students fill out shape and fraction worksheets.
Lesson Plan
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Halloween Candy Sort

For Teachers K - 2nd
Students use their Halloween candy to practice sorting and classifying. They compete a Venn diagram comparing their candy wrappers. They develop ways as a class to catorgize the candy in different ways.
Lesson Plan
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Volume, Surface Area for Rectangular & Triangular Prisms

For Teachers 7th
Seventh graders explore the concept of rectangular and triangular prisms. In this rectangular and triangular prism lesson, 7th graders identify various prisms as triangular or rectangular. Students discuss the various shapes of bases...
Lesson Plan
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Mandalas : polygons

For Teachers 4th
Fourth graders create mandalas. For this mandala lesson, 4th graders look at these polygons in nature and man-made forms. They create their own by using tangrams.
Lesson Plan
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Fruity Counters

For Teachers K
Students use fruit counters. In this patterns lesson, students identify different fruits, sort the fruits by color, shape and size, and make a pattern using the fruits.
Lesson Plan
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Build a Weather Vane

For Teachers 1st - 3rd
Students construct a weather vane using their knowledge of some geometric shapes. In this weather lesson, students work in pairs to create a weather vane in order to measure wind direction. Students follow precise...
Lesson Plan
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Surface Area and Volume

For Teachers 6th - 8th
Learners are introduced to the notion of surface area and volume. Students review surface area and volume by finding the area of a two-dimensional shape. They practice using the computer to create different surface area shapes.
Lesson Plan
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Inquiry Cube

For Teachers 5th
Fifth graders investigate geometric shapes. In this geometry lesson plan, 5th graders classify and group shapes and patterns by likeness. They investigate patterns based on clues from their peers.
Lesson Plan
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Fish Eyes Sort

For Teachers K - 2nd
Students sort, classify and write about what characteristics they used to sort fish counters.
Lesson Plan
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What's the Texture?

For Teachers K - 2nd
Students sort, classify, and write about how they sort a variety of shells.
Lesson Plan
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Gummy Bear Sorting

For Teachers K - 2nd
Students demonstrate knowledge of sorting and classifying by color as they sort gummy bear candies.
Lesson Plan
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Shell Sort; Serving up Seafood

For Teachers 2nd - 3rd
Students complete various small group activities to classify items and determine the types of combinations that can be made with these items. In the second lesson, students create menus for a restaurant to help them gain money sense and...
Lesson Plan
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Length, Perimeter, and Area

For Teachers 2nd - 6th
Students explore the concepts of length, perimeter and area. Students develop an understanding of length, perimeter, and area. Students calculate the area and perimeter of random shapes and calculate the area and perimeter of a triangle...
Lesson Plan
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Geometry in Tessellations

For Teachers 3rd - 12th
Students examine tessellations and their geometric properties. Students explore the concept of tessellations and lines, planes, angles, and polygons. Students experiment with the area and perimeter of polygons. Students analyze...
Worksheet
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Identifying Angles

For Students 5th - 8th
In this angles practice worksheet, students respond to 4 questions that require them to identify the pictured angles as acute, right, or obtuse angles.