In this Sketchpad webinar, we’ll start by combining circular and linear motions to construct a sine wave; then we’ll explore multiple ways that trigonometric ratios are manifested in a right triangle on the unit circle. After using dynamic parameters to explore transformations of parent trig functions, we’ll explore how to model various real-world situations that involve cyclical behavior.
I was a public high school math teacher in the Bay Area for 13 years, most of them at Arroyo High School, a comprehensive high school in San Lorenzo, but also a year at Leadership High School, a charter school in San Francisco. During that time I focused on supporting all students to take and pass Algebra 1, and also taught computer programming and a Sketchpad-based course on geometry in art. Since 2004, I've been a development editor and now product manager at Key Curriculum, where I have worked on textbooks, software, technology curriculum, and professional development courses.