Lesson 3

Turning Through Angles

Est. Class Sessions: 1–2

Summarizing the Lesson

Review all of the new words added to the chart in this lesson, including:

straight angle
rotation
arc		 reflex angle
vertex
degree

Again, allow students an opportunity to add to and refine the representations of these words on the chart as their understanding of the concepts grows.

To further review, ask students to make these angles with their arms as they did in the beginning of the lesson. See Figure 1.

right angle
obtuse angle
straight angle		 acute angle
vertex
reflex angle
Student Guide:
Student Activity Book:
Master:
Demonstrating angles by rotating arms including A) no turning, B) acute angle, C) right angle, D) obtuse angle, E) straight angle, and F) reflex angle
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