https://www.penguinrandomhouse.com/books/713610/arithmechicks-find-their-place-by-ann-marie-stephens-illustrated-by-jia-liu/
Arithmechicks Find Their Place by Ann Marie Stephens: 9781635925975 | PenguinRandomHouse.com: Books
Join the Arithmechicks on a mathematical adventure in the big city! Help them solve a mystery in this playful picture book that demonstrates the concept...
by ann