Once I understood what to do, it was really nice! :D
I really like the idea of having three different visualizations of the same thing, and having to compare them to make a set. It's an idea with a lot of potential, because almost anything can be represented with fractions, and i would like to see it expanded! Also because different visualizations have different pros and cons; for instance, the "numerical view" distinguishes between 1/2 and 2/4, but turning them into pies or bars makes you realize they're the same. If you manage to push on this way, leveraging on the necessity to change visualization to compare things, I believe this could give you a great mechanic :)
(I'm just wondering, I do not mean to tell you what to do ^^)
Congrats, that was a good entry ;)