Satya Nadella on the journey to becoming Microsoft's CEO & reimagining technology's impact
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View AllFailure of Reconstruction | AP US History | Khan Academy
How do you define freedom? Stop for a minute and picture what it means to be free. What comes into your mind? Traveling wherever you please? Having enough money to do what you want? Or is freedom better defined by what it’s not: not having anyone telling …
Introduction to Middle school physics | Khan Academy
Hi everyone! Sal Khan here and welcome to Middle School Physics. I have Iman Howard who manages all of our STEM content.
Iman, why should folks be excited about Middle School Physics?
So, Middle School Physics is like the only science out there that exp…
Divergent Minds
[ambient music playing]
[Michael] Derek, have you ever watched Mind Field on YouTube?
No, but I would like to watch it, Michael.
[Michael] Okay. So Mind Field has a theme song that I’d love for you to listen to to see if you can play it for me on the p…
The Simple Secret of Runway Digits
While waiting on a plane during taxi ‘till takeoff, looking out the window, you may have noticed the giant number numbering the runway, say eight, which implies seven others exist, at least, but this is a flight out of L.O.L. Airport, in Nevada’s desert o…
Flat Earth vs. Round Earth | Explorer
You think that with the beautiful photographs that we have of our round blue planet, it would convince any doubters. But there are still some who insist that the world is flat. Correspondent Mariana van Zeller discovers more about this fast-growing moveme…
Worked example: separable differential equation (with taking log of both sides) | Khan Academy
Let’s say we need to find a solution to the differential equation that the derivative of y with respect to x is equal to x squared over e to the y. Pause this video and see if you can have a go at it. I will give you a clue: it is a separable differential…