This engaging activity set pairs 100 of our bestselling MathLink Cubes with 15 double-sided activity cards filled with 30 learning challenges that make math lessons fun. Using the colorful cubes as a handy visual aid, little learnings can learn the fundamentals of addition and subtraction, practice sequencing through color and shape recognition, or even learn about perspective through engaging 3-D building challenges. When math lessons end, MathLink Cubes double as fun building toys! The sturdy cubes come in 10 bright colors, measure 3/4"L x 3/4"H, and can be snapped together or popped apart over and over again. Cubes work with all MathLink Cubes products, and add extra power to math lessons and building projects.