Ann Einstein M.A.T. editor's comment: I think it is imperative that young children have a lot of experience with magnets. They need to hold the magnets in their hands to see what "sticks." As they explore with magnets, they are learning the scientific method at a formative age. They are gathering information, forming a hypothesis, testing their theory, and coming to a conclusion. I do this kit with Kindergarten children who love running around the room with their magnets saying, "I think it's going to stick, I think it's going to stick. Oh it doesn't!" The book begins with very simple concepts but the last sections of the book deal with larger concepts, such as that the earth itself is a large magnet.As a grandmother of a five year old, I give this kit as a gift to all of her friends!