This has been posted often on the forum

• Textbooks - treat each chapter as a book in itself
• PhotoRead the book more than once if you can it helps the classroom be part of your activation.
• When activating, know your purpose what you want to learn from the chapter.
• prior to activation PhotoRead the chapter again, since chapters can be short PhotoRead the two preceding chapters and two following the chapter you're acting.
• Ask questions.
• if you don't know what questions to ask, check with your instructor to help you develop your purpose for the book.
- or read the review questions that often appear at the end of the chapter.
• If the book or subject is new or difficult for you begin your activation in the Glossary.

Alex