CK-12.Org - An online learning environment for teachers and students

CK-12.org is a non-profit organization dedicated to education. Their website offers a large collection of resources for students and teachers like Brain Genie which I previously shared. The bulk of their resources are math and science centered where students can learn about chemistry, physics, algebra, and geometry just to name four. They also offer resources for other content areas as well including history, English, and SAT prep. Their website is free to join and offers a wealth of learning resources and activities. Their site offers articles, quizzes, interactive lessons, videos and students can keep track of their learning as they complete lessons and activities and members can upload their own resources to the site as well. If you are a teacher or a student then do yourself a favor by going to CK-12.org and signing up.