Unit Circle Practice (#TeachersCoding)

I've always wanted a simple interface to help my students practice the unit circle. I've found Quizlet sites that help with this, as well as the occasional Khan Academy exercise that approaches what I want. The big issue I find with most of these is that the interface and the questions ask much more than what I'm looking for. I want a simple flashcard-like situation with no bells and whistles that gets my students the repetition and opportunity to think through the functions with feedback.

Over the winter break, I decided I needed to build the resource I had in mind. Here's the result:

The live site can be accessed here: http://codepen.io/emwdx/full/bgEJYK/

This is essentially a digital version of a set of flash cards, but they never stop. The angles rotate around the unit circle and the trigonometric function used is randomized. Since I am holding my PreCalculus students responsible for the reciprocal functions, but my IB students don't need them, I added the ability to flip those on and off.

I decided to do this on CodePen in case you want to look under the hood to see how it works. The editor view that contains my code is here. Let me know if you use it for something useful.

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