Students add pennies to a coin sorting mat, then make trades. Five pennies for 1 nickel, 2 nickels for 1 dime, or 2 dimes and 1 nickel for 1 quarter. Includes 4 workmats, 4 dice, plus coins. This independent learning center helps children practice primary math skills, with little or no teacher assistance. The center uses a predictable, hands-on format, to reinforce classroom learning. There are enough materials for up to four children: workmats, manipulatives, step-by-step instructions, Teaching Notes, recording sheets, and storage pouch.