Description Each read-aloud book in the Mouse Math series focuses on a single, basic math concept and features adorable mice, Albert and Wanda, who live in a People House. Entertaining fiction stories capture kids' imaginations as the mice learn about numbers, shapes, sizes and more. Over 3 million copies sold worldwide! Cheese Fest! It's every mouse's most magical time of the year. This year, Albert and Wanda will even have a booth at the fair . . . once they build it. Albert's plans are big, but the cardboard supply is small. How can he make the Cheese Fest booth of his dreams when all he has are a bunch of triangles? Every Mouse Math title focuses on a single basic math concept and includes back matter activities that support and extend reading comprehension and math skills, plus free online activities. (Math concept: Shapes.)