Join Sir Cumference for wordplay, puns, and problem solving in this entertaining, medieval math adventure story about radius and the number Pi. This time the ma

Read Along or Enhanced eBook: King Arthur was a good ruler, but in this math adventure he needs a good ruler. Geometry is explained with humor in SIR CUMFERENCE

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 ridin

Read Along or Enhanced eBook: Sir Cumference and Lady Di discover “Fracton numbers” while purchasing cloth and cheese at the Fracton Faire. While twofourths

Read Along or Enhanced eBook: The eighth book in the popular Sir Cumference series, SIR CUMFERENCE AND THE OFF-THE-CHARTS DESSERT introduces readers to differen