Roll through two graphs. Learners see how the points from the unit circle allow easy construction of the graphs for sine and cosine using an instructional video. They discover how to find the amplitude and midline both from the graphs and the function in standard form. Pupils then graph sine and cosine with different amplitudes and midlines.

Concepts

amplitude, vertical shifts, cosine, sine, graphing trigonometric functions, trigonometric, trigonometric functions, radians, degrees

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Instructional Ideas

• Have class members compare and contrast the graphs of sine and cosine

Classroom Considerations

• Assumes class members know the values of trigonometric functions for 30, 45, 60, and 90 degrees
• First lesson in four-part unit on graphing sine and cosine curves

• This video is hosted on YouTube

Pros

• Includes an exit ticket to check for understanding
• Uses colors to highlight points on the graph from different quadrants on the unit circle

Cons

• None

Common Core

HSF-IF.C.7.e HSF-TF.A.2 HSF-TF.B.5