Sir Cumference and the Roundabout Battle: A Math Adventure    by Cindy Neuschwander & Wayne Geehan Order:  USA  Can Charlesbridge, 2015 (2015) Hardcover, Softcover, e-Book     Reviewed by Bob Walch This picture book for young readers features an adventure spotlighting Sir Cumference who finds his castle about to be attacked by Sir Wantsalot. As his men prepare for battle Sir Cumference needs the assistance of Rounds 2, the son of Edmund Rounds, who must quickly figure out if there are enough bows and arrows to hold off the interlopers. When he discovers that some weapons are in short supply, Rounds 2 needs to devise another way to figure out how to repel the invaders. Fortuneteller, the wily youth, comes up with an idea that saves the day. A clever introduction to the concept of rounding off numbers, this engaging book will help your child understand this important aspect of dealing with complicated numbers. Note: Opinions expressed in reviews and articles on this site are those of the author(s) and not necessarily those of BookLoons. Find more Kids books on our Shelves or in our book Reviews