Help young students master early math skills with these stackable cubes. This set of plastic cubes link together on all sides with circle shape cutouts. Easy for little hands to connect and twist apart. Can be used in place of any 0.75" cube and fit in Unifix apparatus and materials. • Great for counting to 100 by ones and tens, grouping, and one-to-one correspondence. • Cubes link together on all sides of each cube with circle shape cutouts. • Can fit in Unifix apparatus and materials. • 10 different kid-friendly colors, these cubes are terrific for grouping by color and for exploring patterns. The Learning Resources Snap Cubes are specially designed to connect on all six sides. They have a plastic construction that is made for lots of play. The Learning Resources cubes are easy for little hands to connect and twist apart. They can be used in place of any cube and fit in Unifix apparatus and materials. The set includes an activity guide, giving you and your child lots of ideas for play time fun. The set has ten different colors, offering a vibrant play option for kids to enjoy for a long time. Subject Area: Mathematics; Specific Subject: Counting & Base 10; Age Recommendation: Ages 5 to 7; Grades: Grades K to 2.