The snake game - negative

This material is used to introduce the negative numbers. The material includes a presentation tray with colored lids containing the following: 5 sets of colored bead rods 1-9, 5 sets of gray bead rods, 1 set of black and white bead rods, 1 set of red and white bead rods, 23 golden bead rods and 23 gray bead rods of 10.