Model essential base ten and place value concepts on your whiteboard so the whole class can see. Real photos of base ten blocks go beyond typical base ten magnetics to help students better visualize the 3-D representation of math concepts. Includes 121 pieces (100 units, 10 rods, 10 flats and one cube). Flats measure 63/4"L x 63/4"H, and units measure 5/8"L. Grades 1 and up.