These are so well done. I gave my 4 year old the internal combustion engine page to play around with, thinking that he’d just find the animations fun to play ar

These are so well done. I gave my 4 year old the internal combustion engine page to play around with, thinking that he’d just find the animations fun to play around with. He ended up with a pretty good (4 year old level) understanding of how different parts of an engine work.