These are adorable! I love all the science ones! We study the solar system, force and motion, gravity, sound, simple machines, animal adaptations, other life cycles, if you are looking for other concepts to make books :-)
I have been teaching since 2004. I have taught preschool, first, and second grades. I currently teach 3rd grade reading and LOOOOVE it!
Check out my blog at http://www.bainbridgeclass.blogspot.com to learn more!