Khan Academy

What is Khan  Academy? 

Khan Academy is an educational organization created in 2006. Its goal is to create a set of online tools that helps educate students. The organization produces short video lessons, supplementary practice exercises, and materials for educators. It has produced over 15,000 video lessons teaching various academic subjects, including mathematics, sciences, literature, history, and computer science. All resources are available for free to users of the website and application.