random number generator, if you happen to need precalculated random numbers.
Not sure if you can specify a distribution (e.g. Gauss, Poisson, etc) yet.
Nope, you can't. Uniformly distributed only.

Quoted: RANDOM.ORG offers true random numbers to anyone on the Internet. The randomness comes from atmospheric noise, which for many purposes is better than the pseudo-random number algorithms typically used in computer programs.

How to construct a sphere approximation to a triangle mesh.

3d graphing calculator with interactive rotation of your graph. this is closer to being "good". i still haven't found a good free one yet.

Math jokes. Some I'd seen before, some new.

Quoted: If you don't study... may as well be a little creative. Funny School Test study

Precise scientific formulae for boiling eggs.

Quoted: Create fascinating patterns using Java Spirograph

A plot of a formula that depicts the formula itself! Wow!

Quoted: J. Tupper concocted the amazing formula...