This set includes three kinds of materials :
beads: 100 unit beads, 45 bars of 10, 45squares of 100,9 cubes of 1000
containers: 2 wooden boxes, 3 wooden trays and 4 brown cups
cards: 3 set of small number cards 1-3000(wooden) and one set of large number cards 1-9000 (white)

This set is due to help the children experience a sensorial impression of addition (or subtraction, multiplication, division or long division); see the function of the decimal system; understand the necessity of exchanging because of the limitation of nine numbers.