Lesson Plan
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Am I Seeing Double?

For Teachers All
Students explore symmetrical design and lines of symmetry.  In this fourth grade geometry lesson, students create their own symmetrical design and identify and label the lines of symmetry.  Students use one design to create a...
Lesson Plan
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Attributes & Nets of a Cube

For Teachers 3rd
Third graders engage in a lesson that focuses on the attributes and forming of a cube. They construct a cube using different combinations while comparing a square with only two-dimensions. Students fold paper while following the...
Lesson Plan
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Tessellations WOW!

For Teachers 3rd - 5th
Students identify and manipulate shapes to create tessellations. In these geometry/spatial relations lessons, the students use of a variety of modalities such as literature, music, writing, and art as introductions to the concept of...
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Mirror Symmetry/Mirror Images

For Teachers 5th - 6th
Students explore lines of symmetry in geometric shapes. In this geometry lesson, students construct angles using mirrors and rubberbands, then predict the number of images that will appear in the reflection. Students reproduce lines of...
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Angles, Triangles, Quadrilaterals, Circles and Related

For Teachers 6th - 8th
Students classify angles. In this angles activity, students explore the characteristics of angles, triangles, quadrilaterals and circles. They identify polygons and sing a classifying angles song. Students participate in a...
Lesson Plan
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Triangle Conjectures

For Teachers 10th
Tenth graders investigate the theorems of ASA, AAS, AAA and ASA. In this geometry instructional activity, 10th graders discuss the theorems of triangles and how it is used to solve for missing sides or angles. They review how two angles...
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Similar triangles

For Teachers 10th
Tenth graders investigate the theorems of ASA, AAS, AAA and ASA. In this geometry lesson, 10th graders discuss the theorems of triangles and how it is used to solve for missing sides or angles. They review how two angles are formed by...
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Weights of Objects

For Teachers 9th - 12th
Students differentiate between the weights of an object on different planets. In this geometry lesson, students investigate different weights and graph their results as it relates to the different planets. They appreciate the design of...
Lesson Plan
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Proving the Pythagorean Theorem

For Teachers 9th - 11th
Young scholars solve problems using the pythagorean Theorem. In this geometry lesson, students complete proofs using the Pythagorean Theorem. They share their proofs and solutions with their classmates and family members.
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Draw a Diagram

For Teachers 9th - 11th
Students draw diagrams to help them solve word problems. In this geometry lesson, students follow step by step directions to set up a word problem and solve it. They write a paper on their prefer rules or strategies.
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Recognize, create and Record Simple Repeating Patterns

For Teachers 8th - 10th
Students analyze, create, and record repeating patterns. In this geometry lesson, students create shapes using patterns and keep track of the different shapes. They incorporate transformation and reflections into their patterns.
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Reflections

For Teachers 10th
Tenth graders perform reflections on different geometric shapes. In this geometry worksheet,students define the concept of geometric reflections and find the coordinates of the reflection on a coordinate grid.
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Shape Recognition

For Teachers Pre-K - K
Students explore geometry by analyzing different shapes. In this shape identification lesson, students discuss the characteristics that make certain shapes unique and the same characteristics that cause shapes to look the same. Students...
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The Sum of Our Integer Intelligences

For Teachers 7th - 8th
Students complete tasks. In this Seven Intelligences lesson, students complete a variety of activities that are all based on the seven different intelligences humans are supposed to possess based on Dr. Gardener's theory. They work in...
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Triangle Island

For Teachers 9th - 12th
Students calculate the altitude of triangles.  In the web based lesson plan, 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...
Lesson Plan
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The Truth About Triangles And Proofs

For Teachers 9th - 12th
Students engage in a lesson that is about the classification of triangles and the mathematical proofs involved in working with them. They work on a variety of problems that are created by the teacher with the focus upon the importance of...
Lesson Plan
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An Introduction to Angles

For Teachers 4th - 8th
Students identify and create angles. In this angle measurement activity, students use sticks to make models of angles, then measure and name each angle.
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Measurement of Objects Using Similar Triangles in The Plane

For Teachers 9th - 11th
Students use similar triangles and a sight tool to find the height and distance between large objects. In this similar triangles lesson plan, students use a constructed sight tool to measure the distance and height of an object using an...
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Secrets of Painting

For Teachers K - 4th
Young scholars explore colors and shapes. In this art concepts lesson, students discuss shapes, lines, and color while creating a variety of abstract designs. The instructions for several art activities are provided. Basic art vocabulary...
Lesson Plan
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You Must Still Think Yourself, CAS Can Only Help

For Teachers 9th - Higher Ed Standards
Have the class learn about and make conjectures about a line intersecting a cubic.  In this making conjectures about a line intersecting a cubic lesson, students draw lines that intersect a cubic at three different points. ...
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Volume of Spheres

For Teachers 9th - 12th
Students find the volume of spheres. In this geometry lesson, students measure and derive the formula for each shape and solid. They use the correct terminology and units when solving these problems.
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Circles to Spheres

For Teachers K - 3rd
Students investigate circles and spheres. In this space shapes lesson, students compare and contrast two-dimensional and three-dimensional shapes. Students investigate the relationship between plane and space shapes.
Lesson Plan
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Patterns Here, There, and Everywhere!

For Teachers 4th - 6th
Upper graders access the Microsoft Word program and create patterns by utilizing certain keys on the keyboard. They create picket fences, smiley faces, and hearts. It seems that this lesson has as much to do with keyboarding skills as it...
Lesson Plan
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Parallel and Perpendicular Lines

For Teachers 4th - 6th
Learners study parallel and perpendicular lines. In this parallel and perpendicular lesson, pupils explore 2-D shapes and determine if the sides are parallel or perpendicular.

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