For the PTA booster-thon Fun Run, Freedom Elementary principal, Diane Rockwood promised to let the kids make her into an ice cream sundae if they met the goal of $25,000. She also promised to shave 50% of her head if they raised $30,000. The kids raised $30,023!
This is a simulation of a ripple tank. It demonstrates waves in two dimensions, including such wave phenomena as interference, diffraction (single slit, double slit, etc.), refraction, resonance, phased arrays, and the Doppler effect.
A search engine for street names. Enter a pair of street names to see if they intersect somewhere in the U.S.
Motivation RPG is a game where your character, both inside and outside of the game, is progressed by you performing small physical activities. You get to chose which activities are presented to you, and how often.