AP(R) Biology is rigorous and challenging, but Principles of Life helps lighten the load with one-of-a-kind resources for students and teachers. The foundation of the POL 2e program is a brief text that models the intent of the AP(R) redesigned course with more depth, less breadth, and a greater focus on concepts and applications. To help students with this often intimidating course, we created LearningCurve -- a game-like adaptive quizzing system that provides formative assessment in a friendly, low-stakes environment.

And to ease the stress of planning and grading, we created...