This set of 100 colorful plastic cubes connect together. They're used to develop skills in counting, sorting, sequencing, graphing, pattern recognition, measuring, and basic mathematical operations. They also develops skills in spatial intelligence, creativity, problem solving, and fine motor skills.Details:Visual and hands-on math learningEndless possibilities for open-ended creative play and buildingCubes can connect on all six sides and rotate at each connection pointDurable plastic for long-term use and easy cleaningFor ages 3 and upContents:1 plastic storage box5 activity cards100 plastic connecting 2-cm cubes in 10 colors