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The Mental STEM Madness Kit includes a 20-piece kit which will expand children‰۪s STEM horizons with a fantastic set of experiments. There are also all the STEM lab components that any young scientist would need. The rainbow volcano is a firm favorite that has erupted many children‰۪s passions for science and nature. The 11 different experiments will keep your children invested in STEM for many years to come. This is the foundation for learning that any child could easily benefit from.