Students get excited about math--as they create problems they can see and solve! Kids just stack counting beads onto the pegged base and place corresponding number and operation tiles in front--associating numerals with quantities as they build and solve simple addition and ...Students get excited about math--as they create problems they can see and solve! Kids just stack counting beads onto the pegged base and place corresponding number and operation tiles in front--associating numerals with quantities as they build and solve simple addition and subtraction equations.Center includes 74 wooden pieces: 48 beads, 24 tiles, a 3" x 8 1/2" base and a storage box.