This big set provides the perfect way for future mathematicians to get a head start on investigating numbers and learning to count, add, and subtract. The mosaic tiles also allow children to create countless patterns while learning about shapes, colors, sequences, and symmetry. Includes 352 DUPLO® pieces (24 blank tiles, 50 number tiles, 34 sign tiles, 240 mosaic tiles, and 4 building plates), sturdy storage box with transparent lid, and activity guide. Ages 3-6.