What can I say other than Cindy Neuschwander has done it again. She has a wonderful knack for weaving math topics in a story format. She has used her characters to explain bar graphs and circle graphs. I love the picture of the pie with the colors around the edge showing where to cut the pie. I use all of the "Sir Cumference" books in my 7th grade math class. The students love the stories, and many have remembered math concepts as a result of reading them.
My five year old loves this series and he does not realize he is learning math skills. This is his favorite as it uses sweets to illustrate charting. His vocabulary now includes some interesting math terms ( although he does not realize it). We now have almost all of the books.
I have this entire series of books. I am always lending them out to students. As soon as I received this book, it went to a colleague's children. After they read the book, I will get a summary of the book and why each one liked the book.
My daughter has loved the Sir Cumference books since the first one we gave her for her first lost tooth. She's now impatient to loose more teeth to get more of these books! We have no tooth fairy in our house, our daughter exchanges a tooth for a Sir Cumference book and loves the trade.