Omni fix Cubes can be used with any math curriculum that specifies linking cubes. Omni fix Cubes come in four brilliant colors and measure 2 cm square. Students snap flat shapes together to form a permanent cube which can then be joined to other cubes to build shapes and teach key geometry concepts! Excellent hands-on manipulative to reach your for visual, spatial, and tactile learners! Fun to build and play with, as an engaging learning tool.