Learn all about the human body as they create a model lung, find their heart rates, log reaction times to check their reflexes and more! Our all-in-one tub includes 8 different experiment cards with involving, hands-on activities based on national science standards. Plus, you get tons of materials to complete each experiment and explore concepts in depth—from models of a heart, skeleton and digestive system to vocabulary cards, diagram cards and full-color charts that make concepts easy to grasp!