The material consists of a presentation tray containing six colored 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 23 golden ten bars
-one box containing 23 gray ten bars.
1. This material is used to introduce the concept of negative numbers.
2. We provide 30 Day money return guarantee, as long as you find the purchased item is different from our listed description and condition.