so i should start making a list of mathematical ideas to tell/ask gunnarsen about... mainly from the point of view of ideas that admit some sort of interesting way of explaining or dramatizing them... but maybe other viewpoints too...

1 g2/octonions/rolling ball mathematica animation

2 "relativistic robotwars" game

3 kummer's chemistry analogy

4 "masquerade" game...

5 "new kid on the block" interpretation of pascal's triangle...

6 commutative diagrams and related formalisms...

7 finite difference calculus...

8 ordinal "epsilon zero" (or whatever it's called) and game trees and so forth... hydra and so forth...

9 "cross-dimensional cavalieri's principle"

10 fundamental theorem of calculus... ??and stokes's thm?? (?sp?) ...and so forth...