Help young students master early math skills with these stackable cubes. Cubes link together on all sides and feature geometric shape cutouts for more complex patterning activities. Compatible with other linking cubes. The versatility of this set can cross over academic standards to reach different ages, grades, and levels of learning. These math cubes link together on all sides with geometric shape cutouts for more complex activities. Set of 100 Features: 100 plastic cubes that measure 3/4" each. Great for ages 5 and up!