Subtraction Snake Game: Individual Beads Nylon

Subtraction Snake Game builds a snake from coloured bead bars and negative bars, and the child works along it, counting to ten, replacing what has been counted with a ten-bar and cancelling positive beads against negative ones. Subtraction stops being a rule to memorise and happens in the hands instead: what is taken away really does leave the chain. The beads are threaded individually in nylon and stand up to constant use. For 3 to 6 year olds who already know the addition snake game.