The conversation between human and AI assistant.
What are some ideas for making science working model for class 9 at the national level?
Those are great ideas. What materials would we need to make those models?
For the electric motor, you would need a battery, some wire, a magnet, and a small coil. For the magnetic levitation device, you would need some magnets, a superconductive material, and a cooling agent like liquid nitrogen. However, for safety reasons, it might be better to stick to the electric motor.