#12 Squares on a checkerboard
I think is fair to say that most people, young and old, have played games on the checkerboard. The question is: how many squares are on the checker board? Let us assume we have an 8 by 8 inch board on an 8 by 8 checker board.
What is the answer for the number of squares on a 2 by 2 board?
Continue until you see the pattern.