This may just look like construction cubes, but you can use them to teach children counting, sequencing, patterning, addition, subtraction, reflection and rotation with the 50 included math activities. You can also use the creative design activities to build animals, buildings and more! Children can also create their own designs and images. As children learn with these cubes, they will improve fine motor skills, hand-eye coordination and logical thinking. Use the included Messy Tray to keep activities contained during play. This set includes 40 linking cubes, 16 quadrants, 12 triangles, 20 rods, 25 double-sided activity cards and 1 Messy Tray--and it's all packaged in a sturdy cardboard box for easy cleanup and storage. Size of cubes: 2cm. Size of Messy Tray: 10"L x 10"W. For ages 3 and up