On paper, having students draw derivatives and antiderivatives sound pretty similar. But when building game mechanics, the two problems are completely different. In the last few weeks, we overcame that hurdle. Here's a sneak peek at Anti-DDX:
It looks like sin(x) is a possible antiderivative of cos(x). Anti-DDX will ship with Part 2 of "Hands-On Calculus", due out in early 2013!