Foam Magnetic Base 10 Set These proportional foam magnetic pieces are the perfect visual aid for teaching base ten basics. The set includes 121 grid-lined pieces: 100 single units, ten 10-unit rods, ten 100-unit squares and one 2-dimensional graphic of a 1000-unit cube. Perfect for helping young students learn counting, grouping, place value, numeration, and multiplication. The magnetized foam pieces are easy to grip and place on magnetic whiteboards. This classroom demonstration tool is also useful for hands-on learning in small or large groups.  WARNING: CHOKING HAZARD - Small parts. Not for children under 3 yrs.