Tape the dollar bill to the middle of one of the pizza trays. Cut the second pizza tray into fourths (four equal parts) and tape a quarter to each piece. Cut the third pizza tray in half, and thencut each half into fifths (five equal parts). Tape a dime to each of the ten pieces. Cut the last pizza tray into fourths and then cut each fourth into fifths (five equal parts). Tape a nickel toeach of the twenty resulting pieces. Using the dollar board as a base, let the children manipulate the various pieces to determine how many of each coin it takes to equal a dollar or another coin.For example, they can place the four quarter pieces on top of the dollar tray to equal a dollar. Then if they want, they can stack five nickel pieces on top of one of the quarters and see a newarrangement. Or they can start by placing five dimes, one quarter and five nickels on top of the dollar tray to equal a dollar. Children will need lots of practice with the this game, but willcontinue to internalize concepts as they manipulate the pieces.