365 Penguins by Jean-Luc Fromental, illustrated by Joëlle Jolivet, translated, published 2006.
Magic realism.
Picture book.
Grades K-4.
Found via School Library Journal, reviewed by Barbara Auerbach.
On January 1, a penguin arrives by mail at a family's house, with a note to feed it when it's hungry. The next day, another penguin arrives, and so on until there are 365 penguins on December 31. As the number of penguins increases, the family's at a loss for what to do with them, so they arrange them in various mathematical configurations and figure out how much food they all need. This is a recipe for hilarity, as well as many, many math problems. This book is filled with ideas for math problems, and it provides the answers so children can check themselves as they go along. This book is daunting to read for storytime, but it would be good to work through with an adult, especially since it touches on environmentalism alongside math. Reviewer Auerbach agrees, stressing the book's cross-curricular possibilities: "The text provides endless opportunities for word problems, and units on penguins and global warming will never be the same." Beyond a lot of math, there's nothing objectionable in this book, and it should make learning math fun and charming.