This early STEM physics activity set includes high-impact activities that challenge young students to think critically, while also teaching them to effectively solve problems. A great teaching tool that introduces students to science, technology, engineering and math, kids will soak in vocabulary words such as, sink, float, weight, buoyancy and density through conducting science experiments with this set. Includes 10 detailed activity cards, featuring 20 different hands-on activities. Plastic. (26 pcs. per unit) Storage box, 10-1/4" x 13-3/4" x 3".