Weigh them! Measure them! Brightly colored interlocking plastic cubes each measure one cubic centimeter and weigh one gram. 10 different colors. Set of 500 in storage container.

Weigh them! Measure them! Brightly colored interlocking plastic cubes each measure one cubic centimeter and weigh one gram. 10 different colors. Set of 100 in polybag.

Weigh them! Measure them! Brightly colored interlocking plastic cubes each measure one cubic centimeter and weigh one gram. 10 different colors. Set of 500 in polybag.

Weigh them! Measure them! Brightly colored interlocking plastic cubes each measure one cubic centimeter and weigh one gram. 10 different colors. Set of 1000 in storage container.

Weigh them! Measure them! Brightly colored interlocking plastic cubes each measure one cubic centimeter and weigh one gram. 10 different colors. Set of 1000 in a polybag.

Weigh them! Measure them! Brightly colored interlocking plastic cubes each measure one cubic centimeter and weigh one gram. 10 different colors. Set of 200 in polybag.

Includes 2 x 50 gram, 2 x 20 gram, and 3 x 10 gram weights. Grades 3 +.

Includes 50 gram, 20 gram, 10 gram, 2 x 5 gram, 2 x 2 gram, and 1 gramweights. Grades 3 +.

Hexagon-shaped, stacking masses in three colors: 5 grams (red), 10 grams (yellow) and 20 grams (green). Set of 35 (20 x 5 g, 10 x 10 g, 5 x 20 g)

Hexagon-shaped, stacking masses in four colors: 1 gram (blue), 5 grams (red), 10 grams (yellow) and 20 grams (green). Set of 54 (20 x 1 g, 20 x 5 g, 10 x 10 g, 4 x 20 g)