Become a junior inventor with Hape's Science Experiment Toolbox. This compact tool box has everything the need to carry out the 6 different experiments listed and anything else their imagination desires. Your little ones are learning key scientific principals including, momentum, potential energy and the conservation of energy all while having fun. After they have carried out the 6 listed experiments they can now use different components to invent and conduct new experiments. Once they've finished playing they can pack it all away in their tool box ready to invent anywhere.