We saw the range of values was between 1 and -1; the graph was periodic with a period of 2 pi. We also named the x and y -intercepts. We completed the sheet on the features of the sine graph. We also discussed how to find the amplitude and period from a given equation in the form: y = a sin (bx).
Animation of the the graphs of sine and cosine:
http://www.intmath.com/trigonometric-graphs/1-graphs-sine-cosine-amplitude.php
https://www.youtube.com/watch?v=CWjVy4iTVAI
HW: Complete slides 1 - 9 on the desmos activity: sine function & WS 13.4 (1 - 9)