24K views · 582 reactions | Taking AP Chemistry? Watch our recent...

Today is the autumn equinox and the first day of fall! As the sun passes over the equator, we take a look at what lies beneath its fiery surface. ☀️🔥 khan.co/sunanatomy | Khan Academy

Ever heard (or felt) “I’m just not a math person”? Try practicing on Khan Academy: instant feedback, no judgement, a variety of questions, and hints along the way. Give it a try! 👉 khan.co/mathonkhan | Khan Academy

We’re excited to announce that studying for the SAT for 20 hours on Khan Academy’s free Official SAT Practice is associated with an average score gain of 115 points. That’s nearly double the average score gain compared to students who don’t use our free test prep. Start studying today! http://khan.co/SATStudyonKA | Khan Academy

"It's amazing, and it's free. It's free!" – LaToya Grubbs, middle school teacher, Georgia. Join Khan Academy today to help every student succeed with personalized practice. | Khan Academy