MasteringBiology (R) from Pearson has been designed and refined with a single purpose in mind: to help educators create that moment of understanding with their students. The Mastering online homework and tutoring system delivers self-paced tutorials that provide individualized coaching, focus on your course objectives, and are responsive to each student's progress. The Mastering system helps instructors maximize class time with customizable, easy-to-assign, and automatically graded assessments that motivate students to learn outside of class and arrive prepared for lecture. By complementing your teaching with our engaging technology and content, you can be confident your students will arrive at that moment-the moment of true understanding.