The Georges, founders of a Montessori school and app company, show how 10 shapes replicate to become 10 patterns while also including some tantalizing vocabulary: Harlequin! Argyle! Paisley!

Bold and bright graphics and one intelligent toddler figure prominently in two paper-over-board books by Kim Deegan. My First Book of Numbers counts down from 10 bowling pins to ""one big mess!"" as ...