Radians on the Circle of a Ferris Wheel
Suppose the cars on a Ferris wheel are located on a circle at increments of radians. This Demonstration lets you choose the color of the Ferris wheel and install the cars up to a given number of radians. You can then spin the part of the Ferris wheel you have constructed.
This was a project for Advanced Topics in Mathematics II, 2017–2018, Torrey Pines High School, San Diego, CA.