## Reflection: Connection to Prior Knowledge Radian Measure Day 1 of 2 - Section 2: Investigation

As students were working on this activity I heard the students discussing how the angles were connected.  They were using reference angles in saying I can add 180 and 45 to get 225. The students are conceptually understanding ideas that will be discussed and formalized in another lesson.

I plan to use the student work to help with the topics in the next lesson.

Connection to Prior Knowledge: Added concepts

# Radian Measure Day 1 of 2

Unit 7: Trigonometry as a Real-Valued Functions
Lesson 2 of 13

## Big Idea: By finding the ratio of arc length to radius, students will understand that radian measure is a real number.

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Standards:
Subject(s):
Math, Measurement, radian measure, circles, ratios
55 minutes

### Katharine Sparks

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