Approximately 400 plastic cubes that measure 1 cm3, have a mass of one gram, and displace one milliliter of water.
There is an assortment of 10 colors. Packaged in a zip-lock baggie. Cubes can attach on several sides to form larger cubes or other objects. Ideally suited for demonstrating mathematical concepts, weighing, measuring, doing volume/density experiments, etc. Kids also love to build structures with them and use them for color pattern puzzles. Includes instructions for over two dozen carefully-sequenced activities.