Discover the science of filtration with this hands-on Water Filter kit from the SES Creative Explore range. This educational set gives children a chance to build their own six-part water purification system. Once assembled, they can add the different layers of filter materials, including granite stones, sand, and activated charcoal. Take some cloudy water from a puddle or ditch and pour it in the top to see the filtering process in action. Watch as the water travels down through each layer, which removes impurities and results in much clearer water at the bottom. This STEM toy is a brilliant and practical way to introduce children to basic scientific principles.