These kits are fantastic! I've received two so far and they are amazing! They come with multiple experiments, really fun additional do it yourself experiments that take learning and science to a new level, and a 40-page book. The book is a combination of Highlights magazine, National Geographic, outstanding YouTube videos that bring all of the content to life and make the kids laugh along the way, and a fun short story. I can't believe that you get so much in one kit. It's a great buy! I highly recommend it!!!