Khan Academy

Sometimes, no matter how much you pay attention in class, a particular subject just doesn’t make sense. And that’s where Khan Academy can help.

Khan Academy is a nonprofit educational platform that offers lessons and practice exercises across numerous subjects. You can use it to learn mathematics and science, along with a bunch of other topics.

For example, imagine you’re having trouble understanding algebra. Instead of relying solely on your textbook, you could open Khan Academy and watch a lesson that explains the concept.

Many lessons include videos that break down difficult topics into smaller parts. You can pause them whenever you want or replay explanations until you understand the topic.

Interactive practice exercises also let you test your understanding and receive feedback as you work through problems.