## Reflection: High Expectations Graphs of Sine and Cosine - Section 5: Homework

In looking at the assignments that the students turned in (Student Assignment), I realized that their graphs for the first problem were unacceptable.  So rather than accepting this work, I decided to have the students redo this graphs in this problem as a class during the beginning section of the next lesson.  I think doing this really firmed in the ideas from the graphing activity.  As you can see from my sample (Student Assignment 2), I had them reproduce the graph with all of the important points.  We talked about the repetitive nature of the y-coordinates (Math Practice 8).  This took a bit of time but I really think it was worth it in the students’ conceptual growth.

High Expectations: Quality Work

# Graphs of Sine and Cosine

Unit 9: Trigonometric Functions
Lesson 8 of 19

## Big Idea: Students get to build the graph of sine or cosine with yarn and spaghetti.

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Standards:
Subject(s):
Math, Trigonometry, Trigonometric functions, unit circle, Algebra 2, master teacher project, sine function, cosine function, 11th Grade
48 minutes

### Amelia Jamison

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