DIY Chemical Balls Educational Set This unique and astonishing Rocket Ball set explores energy and ballistics. With this rocket ball science kit, you can create your own supersonic bouncing balls! Kids will discover the science of flexible materials, as well as inertial energy launchers. In addition, they will learn about the science of flexibility, polymers, energy and movement. Scientific knowledge plays an important role in everyday life. Therefore, learning about natural knowledge is quite important. And this set allows you to learn and have fun at the same time! The set contains 11 elements.  Elements of the set: - 60 g coloured polymer - 3 plastic tubes - 2 cobblestones - Safety glasses - 4 molds of different sizes Box Dimensions: 22 cm x 17 cm x 5 cm The set is designed for children over 8 years of age. The set is CE certified and complies with the EN 71 standard. It is packed in a cardboard box with scientific graphics, making it perfect for a gift.