I love the idea of this book. By the time children get to formal STEM (science tech engineering and math) education in school, for a lot of them, the level of delight and discovery isn't what it could/should be. A baby book introducing mathematics concepts through bright engaging colors and illustrations is a wonderful idea.
Unfortunately the choices and explanations are dissatisfying in a lot of ways. Other reviewers have pointed out specifics, but there are many places where the illustrations and text aren't at all explanatory (G for Golden Ratio for example)...
Wonderful concept and the book is very appealing.
Disclosure: I received an ARC at no cost from the author/publisher.