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Lesson Plan
Curated OER

The Plane! The Plane!

For Teachers 5th
Fifth graders work with polygons.
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Worksheet
Curated OER

Geometry Wordsearch

For Students 5th - 7th
For this mathematical related worksheet, learners explore and analyze thirteen key terms associated with geometry in a word search puzzle.
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Lesson Plan
Curated OER

Triangle Classification

For Teachers 9th - 12th
Students classify different types of triangles. In this geometry lesson, students identify and use properties of triangles. They differentiate between isosceles and equilateral triangles.
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Lesson Plan
Curated OER

Pythagorean Theorem

For Teachers 8th - 10th
Students investigate the properties and idea of the Pythagorean Theorem. For this algebra lesson, students identify the different parts of a right triangle and relate it to the Pythagorean Theorem. They do a robotic experiment to...
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Lesson Plan
Curated OER

Fashion Day

For Teachers 8th
Eighth graders practice using basic measurements to solve word problems.They also investigate finding the perimeter of different polygons and define the characteristics to classify the shape as a polygon.
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Lesson Plan
Curated OER

Ovals, Rectangles, Squares, and Triangles

For Teachers 3rd - 5th
Pupils identify geometrical shapes displayed in photographs of everyday objects in a metropolitan setting.
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Lesson Plan
Curated OER

Geometry House!

For Teachers 4th
Fourth graders use computer drawing tools to create a house of geometric shapes.
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Lesson Plan
Curated OER

Forces Applied to an Object

For Teachers 4th
Fourth graders predict, observe, and compare what happens when a force is applied to an object. In this forces lesson, 4th graders complete a 'swinging hammer' activity to learn about forces and motion.
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Lesson Plan
Curated OER

Exploring Special Segments in Triangles

For Teachers 9th - 12th
Learners discover that four special segments have a common intersection point. They identify the position of the intersection point in triangles. They produce conjectures about areas of the divided triangles.
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Lesson Plan
Alabama Learning Exchange

Alex: Angles in the Mix

For Teachers 3rd - 5th
In this lesson plan, students explore straight, acute, and obtuse angles in artwork. Then students will use digital cameras to take pictures of objects in their environment that demonstrate these types of angles. Students will use these...
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Handout
Math Open Reference

Math Open Reference: Angles

For Students 9th - 10th Standards
Everything you wanted to know about angles and more, including 1) how to measure angles 2) types of angles 3) angle relationships and 4) angles around a transversal.
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Unit Plan
Scholastic

Scholastic: Study Jams! Math: Geometry: Classify Angles

For Students 3rd - 6th Standards
Watch and learn how to classify angles then test your knowledge.
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Lesson Plan
OER Commons

Oer Commons: Four Types of Angles

For Teachers 6th - 8th Standards
In this lesson, students learn about four types of angles: adjacent, vertical, supplementary, and complementary. They explore the relationships between these types of angles by folding paper, measuring angles with a protractor, and...
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Handout
Quia

Ixl Learning: Types of Angles

For Students 3rd - 5th Standards
Brush up on your math skills pertaining to types of angles then try some practice problems to test your understanding.
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Lesson Plan
Homeschool Math

Homeschool Math: Lines, Rays, and Angles

For Teachers 4th - 5th Standards
This fourth-grade geometry lesson teaches the definitions for a line, ray, angle, acute angle, right angle, and obtuse angle. We also study how the size of the angle is ONLY determined by how much it has "opened" as compared to the whole...
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Lesson Plan
Better Lesson

Better Lesson: Finding Angles

For Teachers 3rd - 4th Standards
The three types of angles, right, acute, and obtuse, exist in our everyday surroundings. Young scholars find these angles using classroom items.
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Unit Plan
CK-12 Foundation

Ck 12: Geometry: Angle Classification Grade 6

For Students 6th
[Free Registration/Login may be required to access all resource tools.] Classify acute, right, obtuse, and straight angles.
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Lesson Plan
Alabama Learning Exchange

Alex: Angle Scavenger Hunt

For Teachers 3rd - 5th Standards
In this lesson, students will explore straight, right, acute, and obtuse angles. Students will go on a scavenger hunt throughout the school to search for examples of these types of angles. The students will use digital cameras to record...
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Lesson Plan
Shodor Education Foundation

Shodor Interactivate: Lesson: Angles (Elementary)

For Teachers 3rd - 5th Standards
In this lesson students will learn what determines whether an angle is acute, obtuse or a right angle.
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Interactive
Math Playground

Math Playground: Estimate the Angle

For Students 3rd - 5th Standards
Practice estimating the angle by sliding the blue "X" button up and down to open and close the angle. See how many aliens you can zap with the correct answer. Your total correct out of 10 is listed just below the problem.
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Lesson Plan
Oswego City School District

Regents Exam Prep Center: Angles and Triangles

For Teachers 9th - 10th Standards
On this site a viewer can learn about the different types of triangles, and categorized by either angles or sides. Tutorials are also included for interior and exterior angles of triangles. A teacher resource page includes a lesson plan...
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Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Classifying Right Obtuse or Acute by Angle Measure

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] Students watch a video and attempt practice problems on how to classify triangles based on angle measures.
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Handout
University of Georgia

University of Georgia: Inter Math: Exterior Angles

For Students 9th - 10th
Intermath Dictionary's site defines terms relating to angles, gives examples, and offers interactive exercises.
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Activity
Math.com

Math.com: Building Blocks: Classifying Angles

For Students 3rd - 8th Standards
This geometry resource investigates types of angles. Definitions, detailed examples, and practice problems are included.

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