For fans of the Sir Cumference series with coordinate geometry on their
mind, here is the seventh installment in this fun look at math and
language.
While riding through the forests of Angleland, cousins Per and Radius
realize they are lost and are desperate for a map to guide them home.
Soon they come across a mysterious house in the hills. Inside they find
a map to a treasure belonging to Xaxon Yellowbearyd, the fiercest Viking
warrior of his time. Per and Radius must decode the strange numbered
grid on the map, while trying to steer clear of the pack of bungling
bandits who are on their tail. Will they find the treasure in time?
Cindy Neuschwander delivers yet another intriguing math adventure
featuring the well-known characters of Angleland. Readers will enjoy
following Per and Radius in their quest while learning how coordinate
geometry relates to everyday life. Wayne Geehan's beautiful
illustrations offer a bit of comic relief, while also clearly
demonstrating the concepts explored in the story.