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Lesson Plan
Curated OER

Lesson 3: Measuring Angles

For Teachers 3rd - 5th
Young scholars use a protractor to measure angles. They classify angles by type: right angle, acute angles, and obtuse angles. Students build and draw right, acute, and obtuse angles. They discuss how do people in various professions use...
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Lesson Plan
Illustrative Mathematics

Are These Right?

For Teachers 3rd - 5th Standards
Is that a right triangle or a wrong triangle? Young mathematicians look at eleven different shapes and use a measuring tool of their choice to determine which triangles have right angles. Consider cutting out sets of the shapes to...
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Worksheet
Curated OER

Making an Angle Eater

For Students 3rd
Third graders create angle eaters where they use circles with cut outs to identify right, obtuse, and acute angles. Students complete 1 angle eater.
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Lesson Plan
Curated OER

Measurement: The Size is Right

For Teachers Pre-K - 8th
Specific learning goals are grouped for different grade levels spanning pre-kindergarten to eighth grade. After preparing the questions and materials, you call a learner to come in front of the class and play the game. Young learners...
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Lesson Plan
Curated OER

Mr. Bo Jangle, What's Your Angle?

For Teachers 3rd
Third graders explore angles. In this geometry lesson, 3rd graders identify and define acute, obtuse, and right angles. Students form angles with their bodies, find angles in picture books, and record angles found outside in their math...
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Lesson Plan
Curated OER

Poolroom Math

For Teachers 3rd - 4th
Students identify, name, and measure angles using playing pool as a motivator in this lesson. They measure, define, and label different angles. They then discuss how their knowledge about angles could be used in a game of pool.
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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

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

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

Types of Triangles

For Students 2nd - 4th
Young math whizzes solve four problems in which a triangle with labeled angle measurements is analyzed. They mark if each triangle is acute, right, or obtuse.
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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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Worksheet
Curated OER

Classify and Measure Angles #3

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

Classify and Measure Angles #5

For Students 2nd - 3rd
In this angles instructional activity, students classify and measure 2 simple angles. Worksheet is part of a site with additional activities and links.
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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.
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Lesson Plan
Curated OER

Classify and Measure Angles #2

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

Classify and Measure Angles #2

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

Classify and Measure Angles #4

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

Area Applet

For Teachers 3rd - 6th
Elementary math classes calculate the area of a shape and explain the correlation between the size of the perimeter and the areas that can be contained within that perimeter. They also explain the effect the shape of the perimeter has on...
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Lesson Plan
Shodor Education Foundation

An Introduction To Quadrilaterals

For Teachers 3rd - 7th Standards
Young geometers investigate and apply properties of quadrilaterals.  After a review and discussion of key terms, students use a computer applet to explore four-sided figures and classify them according to their attributes. The...
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Lesson Plan
Curated OER

Surface Area with Polydrons

For Teachers 3rd - 4th
Students explore measurements by analyzing geometric shapes. In this surface area lesson, students identify the terms volume, weight, perimeter and area in order to find the requested measurements of specific polygons. Students utilize...
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Lesson Plan
Curated OER

Triangles Introduction

For Teachers K - 3rd
Students explore geometry by drawing various shapes in class. In this triangle characteristics lesson, students identify the attributes that classify a shape as a triangle and practice using their bodies to create triangles in class....
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Lesson Plan
Curated OER

Shapes Are Everywhere

For Teachers 3rd
Third graders explore pattern blocks noticing their similarities and differences and share their observations with others. They classify shapes by discussing sides and angles and combine pieces to make new shapes.
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Lesson Plan
Curated OER

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...