Angles are a foundational aspect of geometry, defining the size of angles in both two-dimensional and three-dimensional objects. Students learn to recognize angles around them and to measure and to categorize them.

• ### Comparing angle sizes

Compare size of angles with each other. Students will need to identify the relationship between 2 lines as the angle. Requires cutting.

• ### Template: Angle Disks

(4 pages) Create Angle Disks using either 2 different shades of cardboard (one light, one dark) or a transparent sheet to make Transparent Angle Disks. Print, cut out, insert one disk into the other and twist.

• ### Identifying Angles as Measures of Turn

Identify angles as measures of turn and compare angle sizes in everyday situations, order them from smallest to largest.

• ### Identifying Right Angles

Finding right angles, and identifying angles that are larger or smaller than a right angle.

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### Measuring and Drawing Angles to 180°

Create and measure angles to 180°. Students will need a 180° protractor.

• ### Measuring and Drawing Angles to 360°

Create and measure angles to 360°. A 360° protractor is recommended; a 180° protractor may also be used.

• ### Measuring, Drawing, Classifying Angles to 360°

Create and measure angles to 360°. Classify angles according to size. A 360° protractor is recommended; a 180° protractor may also be used.

• ### Measuring, Classifying and Ordering Angles to 360°

Create and measure angles to 360°. Classify angles according to size. A 360° protractor is recommended.