The Four Color Theorem - This activity is about coloring, but don't think it's just kid's stuff. It's a MAP-ematical dilemma! This investigation will lead to one of the most famous theorems of mathematics and some very interesting results.
2015 Mathematics Game - Use only the digits 2, 0, 1, and 5, in any orders, with the operations +, -, x, ÷, ^ (raised to a power),sqrt (square root),! (factorial),and !! (double factorial) to write expressions for the counting numbers 1 through 100.