What I Did For My Summer Vacation
Sep. 9th, 2003 12:38 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
ursulaIf you've ever wanted to learn all about the invention of graphing, or stare at excessively purple graphics:
Chameleon Graphing - Plane History
Chameleon Graphing - Plane History
ursula