Magnets bar magnets u-shaped magnet SN teaching experimental magnet

Magnet is mainly used for teaching, demonstration of teaching (elementary science experiments, middle school physics experiment) teaching tool. Can also be used for school stationery, children's toys and other ... More likely to arouse students ' interest in learning, to concentrate its attention and stimulate their thinking and imagination, children can also use magnets N;S and Earth's magnetic field is repulsive, principle of opposites