Unlike "new" editions that have only minor changes, this is really the "new" classroom instruction that works, significantly updated with current research. It references the prior version with which many educators are familiar, comparing and contrasting what the more recent research tells us. The authors have identified 14 research-based strategies, grouped in six categories (which fits with the principle of helping students make sense of learning by clustering and categorizing the information (p. 63). The authors also offer suggestions for application, suggesting identifying where you are already strong and continuing that, and then identifying one area to work on, rather than trying to do everything at once.