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Worksheet
Curated OER

Classify and Measure Angles #2

For Students 2nd - 4th
In this angles worksheet, students classify and measure 2 given angles. Worksheet is part of a directory, click on line to access worksheets.
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Worksheet
Curated OER

Angle Measures

For Students 5th - 6th
In this angles worksheet, students solve 20 problems pertaining to angle measurement and classification. This page is intended to be an online activity, but can be completed on paper.
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Lesson Plan
Curated OER

Classifying Triangles Based On Properties of Angles

For Teachers 5th Standards
The interactive instructional activity featured here calls for the use of a Smartboard for sorting and classifying shapes. Then, pupils discuss the rules they followed for sorting their shapes, particularly focusing on the properties of...
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Lesson Plan
Illustrative Mathematics

Lines of Symmetry for Quadrilaterals

For Teachers 3rd - 5th Standards
Explore how lines of symmetry help define different categories of quadrilaterals. Looking at a square, rectangle, trapezoid, and parallelogram, young mathematicians discover that each shape has its own, unique symmetry. Encourage your...
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Lesson Plan
Curated OER

Measuring Angles

For Teachers 6th
Sixth graders identify and measure right, acute, obtuse, and straight angles. In this geometry lesson, 6th graders review the definition of each angle and are shown examples of each specific angle. Students use toothpicks, gumdrops, and...
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Lesson Plan
Curated OER

Angles

For Teachers 5th
Fifth graders identify different angles according to its type that is determined according to taking a measurement of the degree. They also explore the vocabulary related to the concept.
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Worksheet
Curated OER

Classify and Measure Angles

For Students 3rd - 5th
In this angles worksheet, students use a protractor to measure and classify a set of 9 angles. A reference web site is given for additional activities.
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Worksheet
Curated OER

Angles

For Students 4th - 6th
In this angles worksheet, students classify and measure a set of 12 angles. A website reference for additional activities is given.
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Lesson Plan
Curated OER

Classifying Quadrilaterals

For Teachers 4th - 5th
Fourth and fifth graders learn to classify quadrilaterals and use more than one name for each. They follow the directions and classify three quadrilaterals. There are also activities which can be done with a partner.
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Lesson Plan
Curated OER

Angle Action

For Teachers 6th
Sixth graders investigate the concept of an angle. They classify an angle according to its type. The lesson has students practice with acute, right, and obtuse angles. A unique part is when telling time using clock hands is related to...
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Lesson Plan
Curated OER

Quadrilateral Clues

For Teachers 4th - 5th Standards
Fourth and fifth graders work in pairs  explore quadrilaterals. In this problem-solving instructional activity, learners participate in hands-on activities that require them to identify, describe, compare, and classify quadrilaterals....
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Lesson Plan
Curated OER

Exploring Polygons and The Greedy Triangle

For Teachers 1st - 3rd
Excellent lesson plan! Anne Linehane's geometry story, The Greedy Triangle, offers an opportunity to practice forming various types of polygons with your learners. Using elastic bands (or Chinese jump ropes),...
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Lesson Plan
Curated OER

South Caro-angular

For Teachers 9th - 12th
Students classify and measure angles.  In this angular instructional activity, students measure, contruct, and classify angles.  They identify angles as acute, right, obtuse, and straight. 
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Lesson Plan
National Security Agency

Classifying Triangles

For Teachers 4th - 8th Standards
Building on young mathematicians' prior knowledge of three-sided shapes, this activity series explores the defining characteristics of different types of triangles. Starting with a shared reading of the children's book The Greedy...
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Lesson Plan
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Illustrative Mathematics

What Shape Am I?

For Teachers 3rd - 5th Standards
Sharpen your pencil and grab a ruler, it's time to draw some quadrilaterals! Given the definition of a parallelogram, rectangle, and rhombus, learners draw examples and nonexamples of each figure. The three definitions are then used to...
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Lesson Plan
Curated OER

Identifying Angles

For Teachers 4th
Fourth graders discuss and examine examples of the different types of angles. After learning the names of the geometric shapes students identify the types of angles and then complete the Kidspiration activity, Identifying Angles.
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Worksheet
Curated OER

Classify and Measure Angles

For Students 4th - 6th
In this angles worksheet, students classify and measure a set of 9 angles, using a protractor. A reference web site is given for additional activities.
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Lesson Plan
Curated OER

Pythagorean Theorem by Graphic Manipulation

For Teachers 7th - 9th
There are many different ways to show a proof of the Pythagorean Theorem.  Here is a nice hands-on paper cutting activity that shows a graphic representation. You can even challenge your young Pythagoreans to come up with their own...
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Lesson Plan
Curated OER

Interior and Exterior Angles of Polygons

For Teachers 9th - 10th
Young scholars identify interior and exterior angles of polygons. In this geometry lesson, students add interior and exterior angles of polygons. They use angle theorems to solve the problems.
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Lesson Plan
Curated OER

Find Someone Who........

For Teachers 5th
Fifth graders identify, describe, and classify lines, line segments, rays, and angles. When given a diagram of a line, they classify the line as perpendicular, parallel, intersecting, vertical, horizontal, and/or diagonal.
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Lesson Plan
Curated OER

Angles Lesson Plan

For Teachers 3rd - 5th
Students stud angles, and then play the "What's Your Angle?" game. They complete at least 10 computer generated problems from the Angles Applet.
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Lesson Plan
Alabama Learning Exchange

What You Know About the Bermuda Triangle?

For Teachers 9th - 12th Standards
Get lost in the classifications. Using the backdrop of the Bermuda Triangle, pupils classify it by angle and side measures. They also learn information about the triangle and its history.
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Worksheet
Curated OER

Classify and Measure the Angles

For Students 2nd - 3rd
In this angles worksheet, learners classify and measure 2 given angles, using a compass to determine the angle within 5 degrees. Worksheet is part of a resource directory site with links to many additional activities.
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Worksheet
Curated OER

Classify and Measure Angles #1

For Students 2nd - 3rd
In this angles worksheet, students classify and measure 2 simple angles. Worksheet is part of a site with additional activities and links.