Although I put this book into the 6th and 7th grade sections of the store I would recommend this book for ages 7 and up. There is no need to explain the mathematical concepts to the child and the stories are really engaging and appropriate for younger children. But imagine their joy and surprise…six years later…when they see these same terms being used in their 7th grade math lessons and instead of being scary terms they are old friends!
The publisher says: For fans of the Sir Cumference series with Pi on their mind, here is the second installment in this fun look at math and language. This time the math adventure is centered around a potion that changes Sir Cumference into a fire-breathing dragon. Can Radius change him back? Join Radius on his quest through the castle to solve a riddle that will reveal the cure. It lies in discovering the magic number that is the same for all circles.
Perfect for parent and teachers who are looking to make math fun and accessible for everyone.Cindy Neuschwander is an elementary school teacher who loves teaching math. She also enjoys traveling, reading, and writing stories. She thought up Sir Cumference while visiting medieval castles in England. Cindy lives in Pleasanton, California.Sir Cumference and his son, Radius, sat in the shade of a tree, enjoying a delicious midday meal. Partway through the lunch, Sir Cumference grabbed his stomach and doubled over in pain