Math-loving kittens help Grandma pack up her belongings for her move to the Catskill Mountains in this playful picture book that demonstrates the key math concept of sorting.

Nine chaotic kittens are tasked with helping Grandma sort and pack her belongings before the moving van arrives. But they don’t want to see her go, and besides, there’s so much fun stuff to look through! When the moving van pulls up, the kittens can’t help CATerwauling until Grandma helps them sort their feelings and realize that although she may be leaving her house, she’ll always be there for her family. . . .

Author Ann Marie Stephens draws upon more than 30 years of teaching experience to ensure that readers absorb math while having fun in the adventure-filled A CATastrophe Tale series. Jenn Harney’s energetic illustrations hilariously capture the antics of these enthusiastic kittens.

Each book in the A CATastrophe Tale series includes helpful back matter, which shows readers that, just like the kittens, they use mathematical skills in their everyday lives. Additional titles in the series include CATastrophe!: A Story of Patterns, CATawampus!: A Story of Shapes, and sCATtered!: A Story of Estimation.