The game is pretty unique for the jam, but its just not that fun. There's not that much even in the math context. You could have added differentiation, division, sumofs(Σ), graphs, polynomials like parabolas (vertices & intercepts questions), two graphs intercepts, trigonometry, algebra, number theory, etc. To make the gameplay more varied and interesting. Also a time limit per question.
When I pressed enter, it would deselect the input field, meaning I had to reselect with mouse every time which was annoying. More graphics would have been nice. (I'm a sucker for post processing) and music would have been nice as well.
Pretty good score, but the belt came down.