Includes 3 complete Young Scientist Club kits in one low-priced set! Kit 19 Bones and Muscle - In this exciting kit, students learn about the mechanics, importance, and make-up of bones and muscles by studying and recreating an X-ray, making hinge and ball-and-socket joints, and by making a leg model with bones and muscles. This kit concludes by students identifying common bones and muscles. Kit 20 Senses - Young Scientists study the five senses (touch, smell, taste, sound, and sight) by stimulating hot and cold touch receptors, smelling mystery substances, mapping taste buds on the tongue, mimicking the vocal cords, and dilating the pupils. The senses of all Young Scientists will surely be stimulated by this kit. Kit 21 Light - The intriguing topic of light is studied by using a prism, making shadows, and constructing a spinning color wheel. Young Scientists will also enjoy creating optical illusions. A great introduction to the field of physics.