
Reserve it at BN.com & pick it up in 60 minutes at your local store.
Enter a zip code
(Paperback)
Young Per learns a new math game when she visits her uncle and aunt, Sir Cumference and Lady Di, and her cousin Radius. Using what they learned about figuring area in that game, the two children set out to solve a riddle about the Isle of Immeter, formerly owned by Countess Areana and now guarded by a sea serpent. To unlock the key to the Island's secret, they must work together and think outside the box to solve the riddles Areana has planted in some of the Cattle's tiles, all the while staying a step ahead of the fearsome sea serpent. The story is rather slight, but the unsophisticated acrylic paintings help move the plot along and add an element of drama. Certainly this will enhance a math lesson about perimeter, radius, circumference, and the area of a circle. It makes more concrete the formula we all learned in geometry classes. Diagrams are clear and the last page details the thought processes involved in solving the riddle.