ETA hand2mind Green Foam Base Ten Blocks, Class Set Master the fundamentals of place value and regrouping with this base ten set of units, rods, flats, and more Quiet, soft foam can be washed and used for multiple years Enough materials for 20-25 students Set includes 400 Units, 200 Rods, 40 Flats, 4 Cubes, 25 Place Value Mats, Activity Guide, Virtual Manipulative, and Storage Containers Grades 3-6