Electric DIY Water Turbine Science Experiment Set, assembled in 5 minutes, generates electricity immediately upon water supply, allowing children to "light up" the LED by hand and intuitively experience the entire process of water flow kinetic energy → mechanical energy → electrical energy. Plug in structure, tool free, glue free, 6-year-old children can independently complete it with the assistance of their parents. Teaching value: Energy conversion: Observing the variation of LED brightness with the size of water flow, understanding the relationship between "head flow power". Mechanical structure: 3/4/6 blades can be replaced, and the power generation efficiency of different blade numbers can be compared to introduce the concept of "torque". Suitable for in class experiments in the primary school science lesson of "Water Energy Utilization".