Educational Insights Foam Magnetic Base 10 Set (121 Pieces) Perfect for helping students learn counting, grouping, place value, numeration, and multiplication. Magnetized foam pieces are easy to grip Giant size for whiteboard demonstration Includes 121 grid-lined pieces: 100 single units, 10 ten-unit rods, 10 hundred-unit squares, and one 2-dimensional graphic of a 1,000-unit cube Demonstrate base 10 concepts on any magnetic surface