Help support Khan Academy

less than 1m read

·Nov 10, 2024

Hi everyone, Sal Khan here from Khan Academy, and I just wanted to remind you that we are a not-for-profit, and we can only exist through donations from folks like yourself.

Our goal is for everyone to reach their potential. Potential is everywhere; unfortunately, access is not. And that's what Khan Academy exists to change. We are trying to reach tens of millions of students around the world, students in historically under-resourced communities, working with school districts in the U.S., working with stakeholders from around the planet to make sure that students have a way to fill in their gaps, learn at their own time and pace, and have access to truly rigorous course materials.

So I encourage you to think about supporting Khan Academy. The social return on investment on Khan Academy—we're about the budget of a large high school, but we reach already a chunk of humanity, and we want to reach many, many more, with over 140 million registered users today and hopefully billions going forward.

So please think about making a donation. If you've benefited from Khan Academy, you know, you know from folks who have benefited from Khan Academy, or maybe most importantly, if you want to see tens to hundreds of millions to billions of other students benefit from these resources, please think about making a donation. Thank you.

The Power of Persistence

Rounding to the nearest tenth and hundredth

View All

More on Newton's third law | Forces and Newton's laws of motion | Physics | Khan Academy

We should talk a little more about Newton’s third law because there are some deep misconceptions that many people have about this law. It seems simple, but it’s not nearly as simple as you might think. So, people often phrase it as, “For every action, th…

Returning to Fukushima | Explorer

PHIL KEOGHAN: Nuclear power has been a reliable source of energy for 70 years. But it comes with the risk of a meltdown, as we saw in Chernobyl in 1986 and Fukushima in 2011. After Chernobyl, Russia ordered a 1,600 square mile area around the plant abando…

Neil deGrasse Tyson Talks Life on Mars | StarTalk

Uh, Larry Wour had a question for me. He was—he was like totally there too. Let’s find out. So, let me ask you this: um, Mars, is there a possibility that there could have been— I don’t mean microbial life, but I mean actual intelligent, like human life …

Leah Culver of Breaker and Tom Sparks of YC Answer Your Questions About Security and Podcasting

All right, so how about we start with some questions from Twitter. I actually think this one might have been on Facebook, so Brady Simpson asked, “How do we deal with the ever-increasing pressure from governments trying to get into devices?” Tom, do you …

Colonial Weaponry | Saints & Strangers

[Music] Radio weapons, push off, push off design. Mr. Bradford, fire! This is your standard, uh, standard matchlock musket. It was the earliest firing, uh, musket that there was. This over here is a match cord; both sides were normally kept lit in case …

Gradient and contour maps

So here I want to talk about the gradient in the context of a contour map. Let’s say we have a multivariable function, a two-variable function, f of x, y, and this one is just going to equal x * y. So we can visualize this with a contour map just on the …

Help support Khan Academy

More Articles