Simple DIY kit to create your own pair of super bouncy rubber balls!
This awesome STEM kit from the Science Museum range is so easy to do. Simply mix the transparent activators with the colourful silicone putties and knead them together. Roll them up, press into the moulds, then watch as a chemical reaction transforms the squishy putty into a solid elastomer! After 20 minutes, they'll be completely set - totally unique and brilliantly bouncy. A great kit for science fans. Boing!