[Free Registration/Login Required] Excellent diagrams, including the Ferris wheel, depict parametric equations and their related graphs.

[Free Registration/Login Required] Students describe, analyze, and reason angles being as small or as large as they can imagine. Using trigonometrical ratios, this is a fun exercise in understanding how to examine the perfect graph.

[Free Registration/Login Required] Students use the interactive features of Activstudio to graph various functions.