In Numbers, readers can flex their math muscles while honing visual-discrimination skills, as they’re often challenged to count or compare and contrast picture details. This title covers counting, counting by twos, shapes, and comparisons. Multiplication and division are touched on, although readers in the target age group may not have learned those processes yet. ... Artwork in both titles is cheery and colorful, populated by diverse humans. ...Numbers covers some topics many children may not have learned yet, and its numerous examples of regional vocabulary may confound youngsters.