Khan Academy's engaging online video learning covers everything from lessons on mathematics and preparing for standardized tests to mastering personal finance -- all for free.
Focus on STEM subjects: With the US education system's focus on STEM (Science, Technology, Engineering, and Mathematics), Khan Academy's attention to the same subjects across grades and disciplines is a helpful way to enforce at home what goes on in the classroom.
Engaging lessons: The video lessons are short and appealing -- with the narrator drawing on an electronic blackboard to illustrate concepts as he or she speaks. The videos are closed-captioned and come with a transcription and accompanying questions and quizzes to help you practice what you just learned.
Gamified: As you move through lessons and exercises, you can monitor your progress and earn badges, patches, and points to show off to other Khan Academy students.
Learn on the go: Khan Academy has Android and iOS apps that provide a similar learning experience to the browser version, with videos and exercises.
Global reach: Khan Academy also translated lessons into 36 languages, making its world-class learning global.
Focus on STEM subjects: If -- god help you -- you're looking to expand your liberal arts skills, Khan Academy may not be much help. Except for a handful of US, world, and art history courses, Khan Academy puts most of its efforts into math and sciences.
Khan Academy's mission of providing free world-class education is commendable. Its short video lessons are engaging, with lots of incentives to keep moving through a subject. If you're looking to sharpen your skills in math and sciences, Khan Academy has a great selection of topics. Those looking to expand their knowledge of the humanities, however, may need to look elsewhere.
From Khan Academy:
Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.