In this lesson, we are going to introduce the students with magnetism and electromagnets. The basic idea is that, magnets also have an energy called magnetic energy. We are going to explore the idea by 3 experiments: 1. Magnets with paper clips, determine the strength of each magnet; 2. Magnetic field demonstration, showing that the energy is actually stored in magnetic field; 3. Electromagnets, demonstrate the functioning of an electromagnet.
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