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Lesson Plan
Curated OER

Classifying and Measuring Angles

For Teachers 5th
Fifth graders explore the three types of angles. In this math lesson plan, 5th graders estimate the measure of angles and draw the angles using a protractor.
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Worksheet
Curated OER

Classify Angles

For Students 7th
In this angle worksheet, 7th graders identify various angles. Students respond to 6 short answer questions identifying the different angles represented in each.
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Worksheet
Curated OER

Angles

For Students 5th - 8th
In this angles learning exercise, students answer multiple choice questions about different types of angles and measurements of angles. Students complete 6 questions total.
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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

Right Triangles

For Students 10th
In this right triangles worksheet, 10th graders solve and complete 12 different types of problems. First, they solve for a variable given each of the right triangles with the sides as indicated. Then, students determine the shorter...
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Worksheet
Curated OER

Angles

For Students 10th
For this angles worksheet, 10th graders measure 10 different types of angles described in each problem. First, they determine whether two congruent angles form a supplementary figure. Then, students determine the degrees in an angle when...
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Lesson Plan
Curated OER

Searching for Angles and Lines

For Teachers 6th - 8th
Students work to find and reinforce concepts related to lines and angles. They identify the characteristics of shapes that have one, two, and three dimensions. The students also work on definitions related to the geometry of shapes.
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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
Pennsylvania Department of Education

Kites: On the Right Track

For Teachers Pre-K - K
Students use the Pythagorean theorem to discover the relationships between the lengths of sides of a right triangle. In this right triangles lesson plan, students use their reasoning and mathematical skills.
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Lesson Plan
Curated OER

Lines, Rays, and Angles

For Teachers 3rd
Third graders read "Pigs on the Ball" by Amy Axelrod and discuss the geometry concepts presented in the book. They use Twizzler sticks and pipe cleaners to represent lines, rays and angles.
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Lesson Plan
Curated OER

Geometry: Lesson 8

For Teachers 8th
Eighth graders engage in a lesson that is concerned with the finding of angles that are found in different two dimensional figures. They compare and contrast exterior and interior angles while also determining the unknown measures of...
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Worksheet
Curated OER

Identify Different Types of Angles

For Students 5th - 6th
In this angles worksheet, students identify a set of 4 given angles as either obtuse, acute, right or straight, checking the correct box next to each. A reference web site is given for additional activities.
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Lesson Plan
Curated OER

Artistic Angles

For Teachers 5th
Fifth graders explore angles by using protractors. They recognize, describe and determine the surface area and volume of three-dimensional shapes. Students recognize the right angle, acute angle, obtuse angle and vertex. They identify...
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Worksheet
Curated OER

Identify Triangles

For Students 3rd - 5th
In thins triangles review worksheet, students examine 3 triangles and their measurements. Students classify them as acute, right, obtuse, equilateral, isosceles, or scalene.
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Worksheet
Curated OER

Triangle Angle Sort

For Students 10th
In this triangle and angle worksheet, 10th graders identify 36 different angles and triangles illustrated on the sheet. First, they define the vocabulary to include equilateral, scalene, right, and isosceles triangle. In addition, they...
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Printables
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K-5 Math Teaching Resources

2-D Shape Cards

For Students K - 5th Standards
Add some visual support to your elementary geometry lessons with this set of printable shape cards. From triangles and squares to octagons and nanogons, this simple resource can be used in countless ways to develop children's knowledge...
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Worksheet
Math Mammoth

Triangles

For Students 6th - 8th Standards
A six-page packet walks, or bends learners through angles that combine to create triangles. Definitions are given for right triangles, obtuse and acute triangles. They draw angles according to directions, using a protractor to meet the...
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Worksheet
Curated OER

Classifying Angles: Greater Than, Less Than, or Equal to 90 Degrees?

For Students 2nd - 4th
In this angles activity, students analyze four angles. For each angle, students decide if it is greater, less than, or equal to a right angle. Students check the correct box.
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Worksheet
Curated OER

Classify Triangles

For Students 4th - 7th
Here is a classifying triangles practice worksheet in which learners sharpen their problem solving skills as they solve six story problems.
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Lesson Plan
Curated OER

Angles Lesson Plan

For Teachers 9th - 10th
Students explore the relationship of angles as it relates to 2 and 3-D shapes. In this geometry lesson, students differentiate between acute, obtuse, right, alternate interior, exterior and adjacent angles. They manipulate a math...
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Lesson Plan
Curated OER

Angle Action

For Teachers 5th - 7th
Students measure and label specified angles. In this angles lesson, students use a protractor to find angles that are acute, obtuse, and reflexive. Students then label each angle and match the angles the correct definition. This lesson...
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Lesson Plan
Curated OER

Polygons and Angles

For Teachers 6th
Sixth graders estimate the measurement of angles and then measure the exact distance using an angle ruler. In groups, they explore shapes and recognize the characteristics acute, obtuse and right angles. Students sketch required shapes,...
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Worksheet
Curated OER

Angles

For Students 7th - 10th
In this angles instructional activity, students determine if sixteen angles are acute, obtuse, straight or right. Students defend their decisions with their classmates.
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Lesson Plan
Curated OER

Identifying Angles

For Teachers 4th
After identifying angles (acute, obtuse, right) during a math or science instructional activity, 4th graders will use the computer to stamp pictures in the correct category using KidPix computer software.

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