Book 2 is a humorous introduction to magnetism based on the orientation of electron spins. Children learn about magnetic fields, attractive and repulsive forces and the difference between magnetic and non-magnetic materials. Children love this book. Here are some of their comments: I liked Book 2 a lot more than Book 1 because it was cool to learn about magnetism. Josh, 10. I was more involved and used my brain a little more than with Book 1. Mia, 10. My favorite bit is when Millie said ""ohh that's how my door works"". Hannah, 9. I liked this book because there are facts but it's a story. Gilles, 11. These books will stimulate children's curiosity. Questions are more than welcome. Send Millie a message at millie.kolorato.com or at www.facebook/milliemicronanopico/.