Kinetic learners will love these bold, bright blocks! A great addition to classroom learning materials, these blocks help students explore geometry, volume and other measurement concepts. Removable bases allow you to fill these with liquids and are easy to clean. Includes a wide variety of shapes that can help relate 2D shapes to 3D solids. It’s never been easier to build the perfect math lesson! Plastic. (14 pcs. per unit) 2 1/4" x 1 1/4"