This set is used for building the decanomial.
The entire multiplication table from 1 to 10 may be constructed using these beads.
A wooden tray contains:
1) 5 bars of each coloured bead bars 1-9 in a wooden box;
2) black and white bead stairs 1-9 in a wooden box;
3) 22 golden bead bards of 10 in a wooden box.
