This is the best kids science activity book I've ever seen. Many are either too simplistic and one dimensional, and the child gets bored with the experiments very quickly, or, they are too difficult for the child to investigate on their own, and the child can't complete any of the experiments on their own, requiring parental support often for hours which is not practical. The initial concepts are carefully thought out to be within the practical abilities of a wide range of primary age children, but then they have a lot of additional ideas that the child can think about, try slightly different experiments based on the same principle and also inspire them to think of their own variations. Awesome, and enormous, as this is the full version and not the cut down edition.
