An excellent summary of what is wrong with the textbook market and the potential impact of using open textbooks. Published in February of 2015, this paper by Ethan Senack of the Student Public Interest Research Group, this report "reviews data collected from five different campus-based pilot programs that encouraged faculty to replace the traditional textbook for their course with openly licensed educational resources (OER) and open textbooks."
Nicole Allen from Student PIRG explains open textbooks and how students are working with their colleges to lower the cost of higher education.
full courses: Saylor Academy’s Psychology 101
course materials: MIT Intro to Algorithms
streaming videos: An Unhealthy Alliance: Tobacco Companies and Anti-Smoking
tests: OpenStax Biology Quiz
comics: Schopenhauer and Hegel
apps: NASA’s Rocket Science 101 on Google Play
question banks: OSU Chemistry quiz bank
simulations What is current?
learning objects: Music Theory exercises
modules: The Biochemistry of Love