Help young students master early math skills with these stackable cubes. Cubes link together on all sides and feature geometric shape cut-outs 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. Set of 100 plastic cubes that measure ¾ in each. Great for ages 5 and up! Size: 20.6 x 22.9 x 2.3 cm.