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Curated OER
Polygon Sum Conjecture
Students calculate the sum of the angles of a polygon. In this geometry lesson, students use the interior angle formula of polygon based on the number of sides of the polygon. They identify the missing angle using algebra.
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Sketching Prisms
Students sketch and create nets of different polygons.In this geometry lesson plan, students differentiate prisms from other three-dimensional shapes. They define the properties of prisms.
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Stained Glass Critter
Pupils investigate the the origination of stained glass in the 12th century cathedrals.
They practice writing their names in cursive symmetrically. Students also practice how to make a stained glass image.
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Circumference and Area
In this circumference and area worksheet, 10th graders solve nine problems relating to geometric shapes. They find the circumference of a circle and the perimeter of a triangle and a six-sided figure. Students also find the area of a...
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Geometry: Angles
In this angle worksheet, students find the value for a given variable. They use similar figures, alternate interior angles, side angle side, and other geometric theorems and proofs to determine the value of the given variable. This...
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Are you in Golden Shape
Students solve and verify the solution for unknown measures. In this geometry lesson plan, students identify the properties of circles. They use the arc, angle and segment relationship to find the missing measures.
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Folding Shapes; Are the Sides the Same?
Second graders explore geometry by experimenting with fold-ables. In this geometric shapes lesson plan, 2nd graders utilize cutout shapes from construction paper which they experiment with by folding. Students examine the symmetry and...
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Shapes: Faces, Vertices and Edges
In this shapes worksheet, students determine the number of faces, vertices and edges of given shapes, then name the shape. A reference web site is given for additional activities.
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Identifying Shapes and Their Features
In this shapes worksheet, students identify shapes and the number of edges and vertices of each. A reference web site is given for additional activities.
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Pasta Research
Third graders read the story STREGA NONA together as a class and discuss what they know about pasta. They each receive pieces of pasta to glue down on construction paper and write beneath each one what they think it looks like.
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Tri this Angle!
First graders draw and describe various types of polygons. they investigate their own environments for examples of polygons. After reading the book, The Greedy Triangle, they discuss everyday objects that are polygons. They create shape...
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Angles: Angles, Angles, Everywhere
Middle schoolers estimate and accurately measure the size of angles communicate with the appropriate geometric terms and symbols to describe and name angles, lines, line segments, rays
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Polygons
Fourth graders identify and describe lines, shapes, and solids using formal geometric language. They use Inspiration to create a graphic organizer and outline of polygons.
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Geo Jammin' - Day 5, Lesson 17: Geo Sakes Alive!
Second graders, given geometric instructions, try to create their own Geo George puppet.
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Geo Jammin' - Day 3, Lesson 9: Attribute Attitude
Second graders read poetry and build their vocabulary through use of the puppet Geo George.
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Covering Spaces
Third graders become more familiar with various geometric shapes by completing the games and activities in this lesson plan. They keep track of the number of each shape they use in each of the three ways.
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Mobius Band
Tenth graders discuss sides of a shape and how to collect data correctly. In this geometry lesson, 10th graders examine shapes and count the surfaces on the shape. They read the history of Mobius Band and relate it to surface area.
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Symmetry
Sixth graders explore symmetry and discuss the difference between a rotation and reflection. Using hands-on activities, such as folding paper shapes, they discover how to find the lines of symmetry and symmetrical characteristics. As a...
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Why Study Fractals?
Learners explore the concept of fractals. In this fractals lesson, students use the website to research where fractals occur in nature. Learners research what fractals are and how fractals are used to solve real world problems.
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Shape Witch
Student make a witch using geometric shapes. Students practice the skills of cutting and pasting two or more shapes together. Students name triangle, rectangle, square and circle and match to corresponding shape.
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Got Milk?
Students measure the angles of a milk carton. They identify and label acute, right, and obtuse angles. Using appropriate tools, students determine the volume of a cube or a rectangular prism. Students complete worksheets to...
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Angle Pairs
High schoolers practice identifying right, vertical, and adjacent angles using a Smartboard. They then determine measurements of all of the angles when only one measurement is given.
Pyro Innovations
Get into Shape
Shapes are so fun! Little ones explore, identify, and create shapes using tangrams or pattern blocks. The activity is intended to stimulate critical thinking while engaging learners through play and shape identification. Each child will...