Teachers – are you looking for a great center activity for your kids? How about a sponge activity? Well, this basic skills game will have kids counting pennies, dimes, nickels and quarters to reveal a picture, having fun without realizing they are learning at the same time! If they happen to answer the problem incorrectly, don't worry – the answer will turn red and they can try again. Students can work alone or in groups. Estimated time for the activity is 10-15 minutes.