Mercedes learned to count pennies, nickels, dimes and quarters in her first grade math book last year. To practice this skill over the summer, we played games like this. The girls set up a "cupcake shop". Emerald was the "baker", and would tell Mercedes a random price for each cupcake. Mercedes would pick which cupcake she wanted, count out the coins correctly and give them to Emerald, who placed them in her play cash register. The girls were not even aware that they were learning. My favorite kind of "school"!