I wonder if, from a neuro-developmental perspective, if someone who spends a lot of time exposed to certain styles of optical illusion will eventually become adjusted to the illusion and stop seeing it.
You all have probably heard this before, but here's a cool math Limerick:
> "A dozen, a gross, and a score, plus three times the square root of four, divided by seven, plus five times eleven, is nine squared and not a bit more."
Also, if you have trouble forgetting the quadratic formula, you can sing it to the tune of Pop goes the weasel
> X equals negative B, plus or minus square root, B squared minus four AC, all over two A