Comprehensive and authoritative, 21st Century Astronomy fosters scientific literacy by offering carefully crafted activities that help students apply the process of science to astronomy, the news, and the world. The 21st Century learning package provides the most up-to-date astronomy research, engaging students as they prepare for lecture, perform in-class activities, and complete meaningful homework assignments--both in person and online. Lead author Stacy Palen draws on her experience teaching at an open enrollment university to build intentionality and transparency into every aspect of the learning package, giving activities a clear purpose and making them easy to execute without special equipment. Norton's service supports every instructor, every step of the way.