Aspiring bakers will embrace this charming picture book about baking pie by using simple math, from one of the world's most creative and celebrated mathematicians. X + Y are dreaming of baking infinite pie... But they don't know if infinite pie is real.With the help of quirky and uber-smart Aunt Z, a whole lot of flour and butter, X and Y will learn that by using math they can bake their way to success!This charming and tasty story from mathematician and author of How to Bake Pi, Eugenia Cheng, reassures young readers that math doesn't have to be scary-especially when paired with pie!Additional back matter includes: a letter from Eugenia encouraging readers not to be intimidated by math, explanations of the math concepts explored in the book, and a recipe for Banana Butterscotch Pie!