@LillyHerself I gave my grandson a couple of these when he was 3 months old (quantum physics, rocket science and biochemistry if I remember correctly). He liked them a lot - I think it had to do with the illustrations that are very basic and still show a progression from one page to the next. No stupid cows or Peppa pigs here - just shapes interacting with each other. Highly recommend!
@LillyHerself
Whatever age you start trying to understand quantum mechanics, you make that face.