PRESCHOOL
Duke, Kate

Twenty Is Too Many

(3) PS Duke's amiable guinea pigs return in another math book, this time introducing subtraction. The simple story and energetic illustrations, full of humorous details, can be enjoyed both as a picture book and as a friendly math lesson, making it appropriate for reading aloud to a mixed-age group. The equations included in the corners of many of the double-page spreads further reinforce the concept.

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