Day 230. I ran a Scratch session at the III conference on Friday and we made a simple racing game using some random numbers to control the speed. I was playing with that idea a bit further today and made this new improved version that has a few extra bits.
Press the green flag to begin then the Spacebar to start the race, R to reset it, and Z to zero the scores. This could be used to learn about probability, as well as a number of other mathematical ideas.