SCIENCE
Fry, Jenny

Building Numbers

(3) K-3 Illustrated by Jacqueline East. The arrival and departure of ten construction vehicles is the context for this introduction to addition and subtraction. In the first half, each sturdy page is wider than the previous one-a visual reminder that, as each new vehicle arrives, the total number increases. Similarly, as building machines depart, the pages decrease in width. Related facts are presented with words, numerals, and illustrations, and each construction vehicle's function is described.

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