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Triangle Side Lengths and Angles Measures

For Teachers 9th - 10th
Students identify missing sides and angles. In this geometry lesson, students use triangular theorems to identify the missing sides. They use the Pythagorean Theorem to find the different ratios of each side.
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Median of a Trapezoid

For Teachers 8th - 10th
Learners find the median of trapezoids and other polygons. In this geometry lesson, students identify important properties of trapezoids. They create trapezoids and polygons using Cabri software.
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Investigating Pythagorean Triples

For Teachers 9th - 10th
Learners investigate and solve Pythagorean triples. In this geometry activity, students find the missing sides and angles of a right triangle. They graph right triangles and move the sides around to create different angles.
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Investigating the Pythagorean Triples

For Teachers 9th - 10th
Students investigate the Pythagorean triples. In this geometry lesson, students solve for different parts of a right triangle. They identify the missing side or angle using the pythagorean theorem.
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Kites of Japan

For Teachers 9th - 12th
Students perform research into the designs of Japanese kites in order to appreciate them for their aerodynamic designs. The appreciation builds student interest in order to produce their own similar designs.
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Math Vocabulary Decoding Activity

For Students 5th - 6th
In this math vocabulary worksheet, students use a letter key code to match match vocabulary words to their definitions. A reference web site it given for additional activities.
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Math Vocabulary Maze

For Students 4th - 6th
In this math maze worksheet, students navigate their way through a maze using clues and spelling out math vocabulary words. A reference web site is included for additional activities. 
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Math Vocabulary Multiple Choice Words Worksheet

For Students 3rd - 6th
In this math vocabulary worksheet, students complete multiple choice problems where they match the correct math vocabulary word to its definition. Students complete 15 questions.
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Review Geometry Week

For Teachers 5th
Fifth graders participate in a review game of geometry topics. In this geometry lesson plan, 5th graders use the "Eggspert" interactive classroom game system to review the geometry skills taught that week. Students work in teams to...
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Identifying Lines of Symmetry

For Teachers 8th - 10th
Students calculate the lines of symmetry using polygons. In this geometry lesson, students graph, compare and estimate using collected data. They identify different attributes to the polygons based on their sides.
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Slope Right Up

For Teachers 6th - 8th
Students use triangles to find the length and slope of each side. After connecting the vertices, they add points based on their specific instructions. They use the Pythagorean Theorem to complete a worksheet to end the lesson.
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Blindfolded Building

For Teachers K - 8th
Students build a Lego design and then work with a partner to reproduce that design. They guide the building of the reproduction by description only and then check their work.
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Technology Integrated Lesson

For Teachers 8th - 10th
Students investigate symmetry in the real world. In this geometry lesson, students inter-relate math and technology. They create and name a variety of polygons.
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Classification in Action

For Teachers 9th - 12th
Students work with a set of objects to set up both quantitative and qualitative classification systems. As a group, students follow an example to design and complete two classification systems using a set of objects provided. ...
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Keith Haring and Graffiti

For Teachers 3rd - 8th
Students appreciate the art of the artist Keith Haring. They design and implement Keith Haring-like images for a wall mural and explain and experience a project containing many different compenents and processes from beginning to end.
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Navy Sail Design

For Teachers 9th - 12th
High schoolers use the Pythagorean Theorem to explore sailboat design. In this Pythagorean Theorem lesson plan, two sides of a triangular sail are measured, and the theorem is used to calculate the third side. A worksheet, bulletin board...
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Equilateral Triangles

For Teachers 4th - 5th
Students examine the attribute of equilateral triangles. In this equilateral triangle lesson plan, students examine a number of paper triangles to determine how they are classified. They determine how triangles are depicted in Navajo rugs.
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Measurement of a Central Angle

For Teachers 9th - 11th
Students calculate the measurement of a central angle. In this geometry lesson, students identify properties of circles. They use Cabri software to create and analyze graphs.
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Arc Measurement Based on The Measurement of a Central Angle

For Teachers 9th - 10th
Students define keywords that are important to solve problems. In this geometry lesson, students find the arc length and angle of a circle. They convert between radians and degrees.
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Textural Animal Sculptures - Model Magic

For Teachers 3rd - 6th
Students create textural animal sculptures. They explore how to accent their pices to make it look metallic.
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Directing Me

For Teachers 1st
First graders practice the language of directions and positions in this unit. They follow sequences in which they rotate their bodies and other objects through quarter and half turns while participating in games.
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Let's Explore the World of Triangles and Quadrilaterals!

For Teachers 2nd
Second graders explore the features of triangles and quadrilaterals. In this lesson on triangles and quadrilaterals, 2nd graders rotate with their group to five different activities all exploring a different aspect of geometry.
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Traditional Japanese Garden Design

For Teachers 5th - 6th
Students create a miniature Japanese garden that incorporates the elements of traditional Japanese aesthetics. They study the simplicity, asymmetrical design and incorporate traditional structures.
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An Introduction to Quadrilaterals

For Teachers 6th - 10th
Students explore different types of quadrilaterals. Students define the terminology used with quadrilaterals. They create particular quadrilaterals based on specific characteristics of the quadrilaterals using an online tool.

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