What initially drew me to this book was how Eugenia Cheng relates many day-to-day concepts, such as baking, to the large world of mathematics. Well reading, this idea remained while I read and I gained a lot of other knowledge was well. The mathematical ideas found in this book are vast, the connections to teaching, especially in an elementary setting are few, but profound, and math concepts can be found in many different settings and practices. I would recommend this book for the amount of information that Cheng discusses, and how clearly she presents it.
Cheng presents many mathematical ideas, but clearly states them all. I often found myself going back to previous math classes, wishing I had her explanation on topics that I struggled with. Not only did she present the ideas clearly, but she also gave well thought out examples that reinforced the ideas.
The book was an easy read, but I often found myself wanted to stop reading so that I could sit with an idea before we jumped to the next one on the following page. I would recommend this book, but would also recommend that the reader take their time working through it and enjoy the connections that Cheng puts in the text. I believe that Cheng wants readers to enjoy math and enjoy the process and details of math, similar to enjoying baking and the many details that go in to it. Go get a piece of pie and grab the book and enjoy.