Math Blocks for Counting: Our educational math manipulatives inspire learning and creativity in daycares, preschool, kindergarten and 1st grade classrooms and at home. Kids love building with them. "Connecting Blocks for Kids: SparkSkies 100 Piece Linking Cubes Set for Counting, Sorting, Connecting Blocks Math Links Manipulatives Educational Toy for Preschool, Kindergarten, Homeschool math cubes snap together easily on all sides of each cube to connect and build with. Sized “just right” for small fingers, with no sharp edges." Stands Up to Heavy Play: Manipulative cubes number blocks are made of thick, sturdy plastic and come in vibrant colors. Counting blocks for kids ages 4-8 are perfect for elementary school. "Unique Appearance of Learning math linking cubes will grab the attention of children for a long time. This makes the SparkSkies 100 Piece Linking Cubes Set for Counting, Sorting, Connecting Blocks Math Links Manipulatives Educational Toy for Preschool, Kindergarten, Homeschool Set a perfect Birthday gift for kids!"