Grade 8 · New Jersey standards

Professor Numerus is locked in the Math Lab.

Five doors stand between the Professor and the corridor, and each one is holding out for a grade 8 math problem. Equations, functions, exponents, geometry, and one last screen full of data.

Get one wrong and you will get a hint, not a game over. Get it wrong twice and the Professor will walk you through it and open the door anyway. Nobody stays stuck in here.

The doors draw their problems at random from a much larger set, so a second run is a different set of five.