Description: 55 of each bead bar from 1 to 10 allows the child to construct all 100 outcomes of the decanominal: 1X1, 1X2, 1x3 ... 10x8, 10x9, 10x10. This is extremely powerful for aiding a child's understanding of multiplication, squares and the Pythagoras board.

Size: 45L*28W*6Hcm

Age: 5+