The purpose of this material is to introduce the child to the unit combinations of subtraction. This game also reinforces the unit addition combinations and prepares the child for negative numbers. The child makes a “snake” from the colored bead bars (positive) and the grey bead bars (negative). As he does the transactions the snake disappears.
The snake game material includes the following:
One box Containing 5 sets of negative bead stairs
One box Containing 5 sets of colored bead stairs
One box Containing 23 golden bead bars
One box Containing 1 black and white bead stair
One beechwood tray for holding the four boxes