The MasteringPhysics platform is the most effective and widely used online homework, tutorial, and assessment system for physics. It delivers self-paced tutorials that focus on instructors’ course objectives, provides individualized coaching, and responds to each student’s progress. The Mastering system helps instructors maximize class time with easy-to-assign, customizable, and automatically graded assessments that motivates students to learn outside of class and arrive prepared for lecture and lab.