Build new skills one cube at a time! Kids will get a hands-on lesson in early math fundamentals every time they build with these MathLink Cubes. This engaging activity set pairs 100 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 ones 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, the 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. Ages 4 and up