Animation of prime factorization of the first 1000 prime numbers. Great for classes doing prime factorizations, or just nmber studies.
Gives a visual appreciation for how we can group numbers
Cool idea for logic and stats, together with social studies. This activity was made for World Aids Day. The idea is that you have stats on 8 different countries, but don't know which stats go with which country. Students have to collate the data for each country and decide which country is which.
Probably high school level.