Can water flow around corners? What is the secret of hydraulics? How does a diving bell work? With KOSMOS, the bathtub becomes a place for experimentation, as there are many amazing discoveries to be made around water. Using great materials like syringes, hoses, measuring cups, marbles, and much more, children explore how a mountain of water is created with this experiment kit. They will find out why a water wheel spins and observe how soap propels a boat. The waterproof, colorful instructions explain the experiments with clear images, making them easy to follow even without reading skills. Each phenomenon is explained in an age-appropriate manner, giving children a first glimpse into the world of physics and technology. A clever gift for all curious kids.