Elementary Negative Snake Game

The material consists of a presentation tray containing six boxes of bead material,

• one box containing 5 sets of colored bead stairs,
• one box containing 5 sets of negative bead stairs,
• one box containing 1 black and white bead stair,
• one box containing 1 pink and white bead stair,
• one box containing 25 golden ten bars ，
• and one box containing 25 gray ten bars.