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*Offer valid on purchases made between August 3 and September 30, 2026 (11:59 p.m. PT). Cannot be combined with any other offers, promotions, or discounts. Promotions and discount codes apply to eligible items only and do not apply to taxes, shipping, or additional fees. Not valid on prior purchases. Single books and K–2 complete bundles are excluded from this promotion.

Why Do We Sleep? Lexile® Measure: 730L Levels: P

$6.25
DOW-P12

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Sleep has puzzled people for a long time. Learn what scientists have discovered about sleep in this informational text.

Page Count: 16

Author: Trudee Romanek

Genre: Nonfiction

Image Type: Photographs

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