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Create a funky squishy ball while exploring chemical bonding in this great stocking-stuffer-sized science kit! Use mass, density and polymers to create your own sparkly stress ball—everything you need is included! • Make a unique squishy stress ball with this quick science kit• Hands-on lesson in chemistry and science geared towards kids• Learn about mass and density, polymers and following instructions • Includes all necessary supplies and a full-color instruction manual