Use these Plastic Base Ten manipulatives to engage students in concrete demonstrations of place value and base ten concepts. Set supplies a class of 20 - 25 students with 600 individual units, 200 rods, 20 flats, three cubes, 96 - page Base Ten Blocks Activity Book (LER0230, sold separately), Teaching Notes and box for organized storage.   WARNING: CHOKING HAZARD - Small parts. Not for children under 3 yrs.