Durable construction Specially shaped ABS components with metal-reinforced joints and burr-free surfaces enable safe, child-friendly operation during experiments and group activities in the classroom. Easy assembly Intuitive plug-in system promotes independent building and practical learning. The modular design supports hands-on building and spatial thinking, making it a suitable STEM toy for developing manual skills. Interactive power generation Crank-powered kit demonstrates energy conversion through magnetic field interaction. Combines visible experiments with hands-on exploration of fundamental physics concepts. Flexible use Provides a reliable power source for LED mini lamps and environmental education. The well-designed crank delivers stable results in energy conversion tests across diverse setups. Use scenarios and applications Classroom demonstrations and group projects that illustrate energy conversion and magnetism, fostering collaborative learning. Independent learning sessions where students build, test, and optimize the energy conversion process to develop practical tinkering skills. Environmental education activities, including powering LED mini lamps during outdoor or classroom experiments to illustrate energy use and sustainability.