How to understand magnetism

Dr. Loopy explains magnetism and the role it plays in our lives.
He shows how magnets are used in our daily lives, to keep cupboards closed, MRI machines to get pictures of our body, magnets in a cow's for their protection. Dr. Loopy has a skit to show how magnets work. They work because of the magnetic field where there are north (negative) and south (positive) poles. The opposite poles are attracted to one another, whereas poles that are the same repel each other.