This unique classroom set of base ten components conveniently interlocks to clarify place value, estimation and operations concepts by enabling students to manipulate and visualize varying quantities with ease. More advanced students can explore spatial relationships and volume. Plastic set is washable and durable for years of hands-on activities. Great for whole-class instruction, small groups, centers or individual exploration.

115-48150 Starter Set - Blue : 100 units, 30 rods,1 decimeter and teacher's guide

115-48152 Group Set - Blue : 100 units, 50 rods, 3 decimeter, base ten pad of 25 sheets, teacher's guide

115-48154 Class Set - Blue : 600 units, 200 rods, 3 decimeter, and teacher's guide