Curated OER
Angles
Fourth and fifth graders investigate angles and name them according to the criteria for obtuse, acute, and right angles. They examine a human-made yarn pattern on the floor of their classroom and identify angles, vertices, and types of...
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Acute and Obtuse Angles
Take a look at these angles: What kind are they? Give mathematicians practice identifying obtuse, acute, and right angles in this categorizing activity. Each type is pictured and explained at the top, and scholars examine nine sample...
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An Introduction to Angles
Young scholars identify and create angles. In this angle measurement lesson, students use sticks to make models of angles, then measure and name each angle.
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Identifying Angles
In this angles practice instructional activity, learners respond to 4 questions that require them to identify the pictured angles as acute, right, or obtuse angles.
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Forming, Measuring and Labeling Angles
Pupils draw and measure angles. For this angle measurement lesson, the teacher demonstrates how to form and measure angles while explaining the parts of an angle, then students practice.
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Geometry - Angles
In this geometry learning exercise, 4th graders tell what type of angles are shown in 6 figures. They write the angle type on each blank line next to the angles.
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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.