MasteringAstronomy -- Instant Access -- for The Cosmic Perspective, 7th Edition

www.masteringastronomy.com

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