This site supports the NSF project on Technology-Rich Units for Future Secondary Teachers: Forging Dynamic Connections Between Geometry and Functions, which is part of the NSF's program on Improving Undergraduate STEM Education (IUSE).

1. Sine Tracer: In this lesson you’ll animate a point x along the x-axis while rotating a point around the unit circle. You'll measure the y value of the point on the circle, plot the point (x, y), and analyze and explain the shape of the resulting graph.