I had read about these books a while back on another blog. These are quick reads to introduce kids to each category of Science. I picked up Rocks and Minerals and Chemistry (especially since she is taking an introductory chemistry class at the moment). Also available: Astronomy, Biology, Periodic Table, Physics and Planet Earth. Really excited about using them. I also have a Curiosity Files download about the blue diamond that will go really well with the Rocks and Minerals book.