Set 7 includes: Bones and Muscles (Kit 19) – The Senses (Kit 20) – Light (Kit 21)MOVING JOINTS, MAPPING TASTE BUDS, AND OPTICAL ILLUSIONS WILL DELIGHT ALL YOUNG SCIENTISTS. Make a hinge and ball-and-socket joint, study and recreate an X-ray. Map taste buds. Find cold and hot receptors. Compare spinning glitter to the ear. Make a vocal cord model. Create optical illusions while studying sight and light. Continue the study of light by making rainbows with a prism and white light with a color wheel. A great introduction to the field of physics.