3 Complete Science Kits in Each Set! Designed by a team of Harvard graduates, scientists, educators, and parents, these award-winning kits are packed with exciting hands-on experiments. Each set comes with 3 complete kits (3 manuals and 3 supply bags) that provide young scientists with hours of learning fun! Stars; Planets; Forces. Study the stars with a star fact book, make a constellation box, design a telescope, use bouncy balls and planet facts to create a solar system mobile, study Newton’s three laws of motion and more!