Offer expires 10/9/2022 at 11:59pm ET. Valid in the United States only. Those who request must be high school instructors who are considering for possible course adoption. Offer limited to the first 250 qualified respondents, who will receive an email with a unique download code and instructions on how to claim the free e-book by 10/13/2022. All e-books will be distributed via Glose, a free digital reading platform.