Curated OER
Angle Action
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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What's Your Angle
Students create an original lesson plan about geometry and angles. In small groups they take pictures using a digital camera of obtuse, acute, right, and straight angles that they find at school. Students use the photos in a computer...
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Triangles
In this triangles worksheet, 4th graders study the lengths that are stated for 3 triangles and describe each triangle by its sides. Students describe 3 additional triangles by their angles.
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Triangle Designs
In this triangles activity, students draw different triangles and write how many sides and angles each one has. Students draw 4 kinds of triangles and have 2 that are impossible to draw.
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Classify and Measure the Angles
In this measuring angles worksheet, students use protractors to measure 9 angles and classify them as obtuse, straight, acute or right angles.
El Paso Community College
Geometry Definitions
Geometry is full of shapes, figures, and corresponding things here and there. The guide shares all of the key pieces of geometric information in a nicely color-coded and labeled sheet.
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Hey! What Is Your Angle?
Fifth graders create and classify straight, right, acute and obtuse angles. In this clever lesson, 5th graders utilize pretzel sticks to form different types of angles. Best of all, they get to eat them at the end!
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Exploring Angles
In this exploring angles instructional activity, 10th graders solve 6 various problems of geometry by identifying various types of angles. First, they use the figure shown to list all the angles that have W as the vertex and then, name...
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Angle Action
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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Measure the Angle
Students measure angles. In this angle lesson plan, students draw angles. They use a protractor to measure angles and identify the angle as straight, right, acute, or obtuse.
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Angles Identification
For this assignment, math whizzes identify angles as either being obtuse, acute, right, or straight. Students identify six angles. The publisher states that this is designed with CCSS.Math.Content.MD.6 in mind, but it really does not ask...
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Orthocenter Of a Triangle
Pupils find the orthocenter of a triangle. In this geometry instructional activity, students identify where the altitudes meet in a triangle. They use Cabri software to explore acute, obtuse and right triangles.
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Classifying and Constructing Corners
Fifth graders, after seeing Honeycomb examples, complete a Classifying Angles worksheet, Clock worksheet, and Defining Angles worksheet.
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Angle Measures
For 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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Year 5 Unit 2b
This slide-show is packed with information relating to a variety of mathematical concepts. Intended as an accompaniment to a full unit, this resource provides definitions, explanations, and opportunities for learners to practice their...
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Geometric Properties
High schoolers find triangular angles using the angle theorem. In this geometry lesson, students describe labeled triangles, use the pythagorean theorem, and rewrite information about triangles in standard form.
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Identifying Angles
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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Angle Measurement
In this angle measurement worksheet, 10th graders solve 24 different problems related to determining the measurement of various angles. First, they define the various ways to measure an angle and define the type of angle that it is....
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Angle Measurement 2
In this angle measurement worksheet, 10th graders solve 24 problems that include determining the measurement of various angles. First, they define each angle and the specific type that is shown in each. Then, students determine the...
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Measuring Spider Web Angles
In this mathematics worksheet, students identify that the spiders each used a different angle to create their webs. Then they find out each spider's angle by estimating and measuring.
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Geometry - Angles
In this geometry activity, 4th graders match 6 named angles to their characteristics. They work with right, acute, straight, reflex, obtuse, and complete rotation angles.
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Angle Land and Angle Aerobics
Sixth graders investigate different types of angles. In this geometry lesson, 6th graders use a protractor to identify acute, obtuse, and straight angles.
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Angles Lesson Plan
Young scholars explore the relationship of angles as it relates to 2 and 3-D shapes. In this geometry lesson plan, students differentiate between acute, obtuse, right, alternate interior, exterior and adjacent angles. They...
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Classifying Triangles Based On Properties of Angles
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...