Khan Academy

Khan Academy offers practice exercises, instructiona1l videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. Subjects include: math, science, computer programming, history, art history, economics, and more. Partnerships with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT offer specialized content. 

Note: Khan Academy can be used to introduce or review a concept or to provide additional practice, but students with disabilities and other struggling learners often will need additional support.