Poll: Best Teaching Strategies Book

Please respond in the comments: What book (or books) would you recommend to teachers in your subject area who are looking for teaching strategies? (If you have time, include a 2-3 sentence review).

My answer: Teaching Children Science: A Project-Based Approach, by Krajcik, Czerniak, & Berger. This book walks you through the philosophy behind project-based science, and how to create a unit, from developing essential questions to creating a calendar for the project. It's awesome.