Pythagorean Theorem Model

I created this piece for a math teacher to help show the Pythagorean theorem in a creative way. The cubes fill the A and B sides, then add up to fill the C side.

To use this piece to it's full potential, the holes in the cubes and in the case are for small magnets that fit right into the slots. My first idea was to put paperclips in the small slots each of the sides has, however not even the smallest paperclip fit. Instead we made a case that would hold magnets under the proof when put to