Let’s use video to reinvent education | Salman Khan


Let’s use video to reinvent education | Salman Khan

Khan Academy is most known
for its collection of videos, so before I go any further, let me show you a little bit of a montage. (Video) Salman Khan: So the hypotenuse
is now going to be five. This animal’s fossils are only found
in this area of South America — a nice clean band here — and this part of Africa. We can integrate over the surface, and the notation
usually is a capital sigma. National Assembly: They create
the Committee of Public Safety, which sounds like a very nice committee. Notice, this is an aldehyde,
and it’s an alcohol. Start differentiating
into effector and memory cells. A galaxy. Hey! There’s another galaxy.
Oh, look! There’s another galaxy. And for dollars, is their 30 million, plus the 20 million dollars
from the American manufacturer. If this does not blow your mind, then you have no emotion. (Laughter) (Applause) (Live) SK: We now have
on the order of 2,200 videos, covering everything from basic arithmetic,
all the way to vector calculus, and some of the stuff
that you saw up there. We have a million students
a month using the site, watching on the order
of 100 to 200,000 videos a day. But what we’re going to talk about in this
is how we’re going to the next level. But before I do that, I want to talk a little bit
about really just how I got started. And some of you all might know, about five years ago,
I was an analyst at a hedge fund, and I was in Boston, and I was tutoring my cousins
in New Orleans, remotely. And I started putting
the first YouTube videos up, really just as a kind of nice-to-have, just kind of a supplement for my cousins, something that might give them
a refresher or something. And as soon as I put those
first YouTube videos up, something interesting happened. Actually, a bunch of interesting
things happened. The first was the feedback
from my cousins. They told me that they preferred
me on YouTube than in person. (Laughter) And once you get over
the backhanded nature of that, there was actually something
very profound there. They were saying that they preferred
the automated version of their cousin to their cousin. At first it’s very unintuitive, but when you think about it from their
point of view, it makes a ton of sense. You have this situation where now
they can pause and repeat their cousin, without feeling
like they’re wasting my time. If they have to review something that they should have learned
a couple of weeks ago, or maybe a couple of years ago, they don’t have to be embarrassed
and ask their cousin. They can just watch those videos;
if they’re bored, they can go ahead. They can watch at their own time and pace. Probably the least-appreciated aspect
of this is the notion that the very first time that you’re trying to get
your brain around a new concept, the very last thing you need is another human being saying,
“Do you understand this?” And that’s what was happening with the interaction
with my cousins before, and now they can just do it
in the intimacy of their own room. The other thing that happened is — I put them on YouTube just — I saw no reason to make it private, so I let other people watch it, and then people started stumbling on it, and I started getting
some comments and some letters and all sorts of feedback from random people around the world. These are just a few. This is actually from one
of the original calculus videos. Someone wrote it on YouTube,
it was a YouTube comment: “First time I smiled doing a derivative.” (Laughter) Let’s pause here. This person did a derivative, and then they smiled. (Laughter) In response to that same comment — this is on the thread, you can go
on YouTube and look at the comments — someone else wrote: “Same thing here. I actually got a natural high
and a good mood for the entire day, since I remember seeing
all of this matrix text in class, and here I’m all like, ‘I know kung fu.'” (Laughter) We get a lot of feedback
along those lines. This clearly was helping people. But then, as the viewership
kept growing and kept growing, I started getting letters from people, and it was starting to become clear that it was more than just a nice-to-have. This is just an excerpt
from one of those letters: “My 12 year-old son has autism, and has had a terrible time with math. We have tried everything, viewed everything, bought everything. We stumbled on your video
on decimals, and it got through. Then we went on to the dreaded fractions. Again, he got it. We could not believe it. He is so excited.” And so you can imagine, here I was, an analyst at a hedge fund — it was very strange for me to do
something of social value. (Laughter) (Applause) But I was excited, so I kept going. And then a few other things
started to dawn on me; that not only would it
help my cousins right now, or these people who were sending letters, but that this content will never grow old, that it could help their kids
or their grandkids. If Isaac Newton had done
YouTube videos on calculus, I wouldn’t have to. (Laughter) Assuming he was good. We don’t know. (Laughter) The other thing that happened —
and even at this point, I said, “OK, maybe it’s a good supplement.
It’s good for motivated students. It’s good for maybe home-schoolers.” But I didn’t think it would somehow
penetrate the classroom. Then I started getting
letters from teachers, and the teachers would write, saying, “We’ve used your videos
to flip the classroom. You’ve given the lectures,
so now what we do –” And this could happen in every classroom
in America tomorrow — “what I do is I assign
the lectures for homework, and what used to be homework, I now have the students
doing in the classroom.” And I want to pause here — (Applause) I want to pause here, because there’s
a couple of interesting things. One, when those teachers are doing that, there’s the obvious benefit — the benefit that now their students can enjoy the videos in the way
that my cousins did, they can pause, repeat at their
own pace, at their own time. But the more interesting thing —
and this is the unintuitive thing when you talk about technology
in the classroom — by removing the one-size-fits-all
lecture from the classroom, and letting students have
a self-paced lecture at home, then when you go to the classroom, letting them do work,
having the teacher walk around, having the peers actually be able
to interact with each other, these teachers have used technology
to humanize the classroom. They took a fundamentally
dehumanizing experience — 30 kids with their fingers on their lips, not allowed to interact with each other. A teacher, no matter how good, has to give this one-size-fits-all
lecture to 30 students — blank faces, slightly antagonistic — and now it’s a human experience, now they’re actually
interacting with each other. So once the Khan Academy — I quit my job, and we turned into a real organization — we’re a not-for-profit — the question is, how do we take this
to the next level? How do we take what those teachers
were doing to its natural conclusion? And so, what I’m showing over here, these are actual exercises that I started writing for my cousins. The ones I started
were much more primitive. This is a more competent version of it. But the paradigm here is, we’ll generate
as many questions as you need, until you get that concept,
until you get 10 in a row. And the Khan Academy videos are there. You get hints, the actual
steps for that problem, if you don’t know how to do it. The paradigm here seems
like a very simple thing: 10 in a row, you move on. But it’s fundamentally different than what’s happening
in classrooms right now. In a traditional classroom, you have homework, lecture,
homework, lecture, and then you have a snapshot exam. And that exam, whether you get
a 70 percent, an 80 percent, a 90 percent or a 95 percent, the class moves on to the next topic. And even that 95 percent student — what was the five percent
they didn’t know? Maybe they didn’t know what happens when
you raise something to the zeroth power. Then you build on that
in the next concept. That’s analogous to —
imagine learning to ride a bicycle. Maybe I give you a lecture ahead of time, and I give you a bicycle for two weeks,
then I come back after two weeks, and say, “Well, let’s see.
You’re having trouble taking left turns. You can’t quite stop.
You’re an 80 percent bicyclist.” So I put a big “C” stamp
on your forehead — (Laughter) and then I say, “Here’s a unicycle.” (Laughter) But as ridiculous as that sounds, that’s exactly what’s happening
in our classrooms right now. And the idea is you fast forward and good students start failing
algebra all of the sudden, and start failing
calculus all of the sudden, despite being smart,
despite having good teachers, and it’s usually because they have
these Swiss cheese gaps that kept building
throughout their foundation. So our model is: learn math
the way you’d learn anything, like riding a bicycle. Stay on that bicycle.
Fall off that bicycle. Do it as long as necessary,
until you have mastery. The traditional model, it penalizes you
for experimentation and failure, but it does not expect mastery. We encourage you to experiment.
We encourage you to fail. But we do expect mastery. This is just another one of the modules. This is trigonometry. This is shifting and reflecting functions. And they all fit together. We have about 90 of these right now. You can go to the site right now, it’s all free,
not trying to sell anything. But the general idea is that they all
fit into this knowledge map. That top node right there,
that’s literally single-digit addition, it’s like one plus one is equal to two. The paradigm is, once you get
10 in a row on that, it keeps forwarding you
to more and more advanced modules. Further down the knowledge map, we’re getting into more
advanced arithmetic. Further down, you start getting
into pre-algebra and early algebra. Further down, you start getting
into algebra one, algebra two, a little bit of precalculus. And the idea is, from this we can
actually teach everything — well, everything that can be taught
in this type of a framework. So you can imagine — and this
is what we are working on — from this knowledge map, you have
logic, you have computer programming, you have grammar, you have genetics, all based off of that core of,
if you know this and that, now you’re ready for this next concept. Now that can work well
for an individual learner, and I encourage you
to do it with your kids, but I also encourage everyone
in the audience to do it yourself. It’ll change what happens
at the dinner table. But what we want to do is use the natural conclusion
of the flipping of the classroom that those early teachers
had emailed me about. And so what I’m showing you here, this is data from a pilot
in the Los Altos school district, where they took two fifth-grade classes
and two seventh-grade classes, and completely gutted
their old math curriculum. These kids aren’t using textbooks,
or getting one-size-fits-all lectures. They’re doing Khan Academy, that software,
for roughly half of their math class. I want to be clear: we don’t view this
as a complete math education. What it does is — this is
what’s happening in Los Altos — it frees up time —
it’s the blocking and tackling, making sure you know how to move
through a system of equations, and it frees up time
for the simulations, for the games, for the mechanics, for the robot-building, for the estimating how high
that hill is based on its shadow. And so the paradigm is
the teacher walks in every day, every kid works at their own pace — this is actually a live dashboard
from the Los Altos school district — and they look at this dashboard. Every row is a student. Every column is one of those concepts. Green means the student’s
already proficient. Blue means they’re working
on it — no need to worry. Red means they’re stuck. And what the teacher does
is literally just say, “Let me intervene on the red kids.” Or even better, “Let me get
one of the green kids, who are already proficient
in that concept, to be the first line of attack,
and actually tutor their peer.” (Applause) Now, I come from a very
data-centric reality, so we don’t want that teacher
to even go and intervene and have to ask the kid awkward questions: “What don’t you understand? What do
you understand?” and all the rest. So our paradigm is to arm teachers
with as much data as possible — data that, in any other
field, is expected, in finance, marketing, manufacturing — so the teachers can diagnose
what’s wrong with the students so they can make their interaction
as productive as possible. Now teachers know exactly
what the students have been up to, how long they’ve spent each day,
what videos they’ve watched, when did they pause the videos,
what did they stop watching, what exercises are they using,
what have they focused on? The outer circle shows
what exercises they were focused on. The inner circle shows
the videos they’re focused on. The data gets pretty granular, so you can see the exact problems
the student got right or wrong. Red is wrong, blue is right. The leftmost question is the first one
the student attempted. They watched the video over there. And you can see, eventually
they were able to get 10 in a row. It’s almost like you can see them
learning over those last 10 problems. They also got faster — the height
is how long it took them. When you talk about self-paced learning,
it makes sense for everyone — in education-speak,
“differentiated learning” — but it’s kind of crazy, what happens
when you see it in a classroom. Because every time we’ve done this,
in every classroom we’ve done, over and over again,
if you go five days into it, there’s a group of kids who’ve raced ahead and a group who are a little bit slower. In a traditional model,
in a snapshot assessment, you say, “These are the gifted kids,
these are the slow kids. Maybe they should be tracked differently. Maybe we should put them
in different classes.” But when you let students
work at their own pace — we see it over and over again — you see students who took
a little bit extra time on one concept or the other, but once they get through that concept, they just race ahead. And so the same kids that you
thought were slow six weeks ago, you now would think are gifted. And we’re seeing it over and over again. It makes you really wonder how much all of the labels maybe
a lot of us have benefited from were really just due
to a coincidence of time. Now as valuable as something like this is
in a district like Los Altos, our goal is to use technology to humanize, not just in Los Altos,
but on a global scale, what’s happening in education. And that brings up an interesting point. A lot of the effort
in humanizing the classroom is focused on student-to-teacher ratios. In our mind, the relevant metric is: student-to-valuable-human-time-
with-the-teacher ratio. So in a traditional model,
most of the teacher’s time is spent doing lectures
and grading and whatnot. Maybe five percent of their time
is sitting next to students and working with them. Now, 100 percent of their time is. So once again, using technology,
not just flipping the classroom, you’re humanizing
the classroom, I’d argue, by a factor of five or 10. As valuable as that is in Los Altos, imagine what it does to the adult learner, who’s embarrassed to go back
and learn stuff they should have known
before going back to college. Imagine what it does
to a street kid in Calcutta, who has to help his family during the day, and that’s the reason
he or she can’t go to school. Now they can spend two hours
a day and remediate, or get up to speed
and not feel embarrassed about what they do or don’t know. Now imagine what happens where — we talked about the peers
teaching each other inside of a classroom. But this is all one system. There’s no reason why you can’t
have that peer-to-peer tutoring beyond that one classroom. Imagine what happens
if that student in Calcutta all of the sudden can tutor your son, or your son can tutor
that kid in Calcutta. And I think what you’ll see emerging is this notion of a global
one-world classroom. And that’s essentially
what we’re trying to build. Thank you. (Applause) Bill Gates: I’ll ask about two
or three questions. Salman Khan: Oh, OK. (Applause continues) (Applause ends) BG: I’ve seen some things
you’re doing in the system, that have to do with motivation
and feedback — energy points, merit badges. Tell me what you’re thinking there. SK: Oh yeah. No, we have
an awesome team working on it. I have to be clear,
it’s not just me anymore. I’m still doing all the videos, but we have a rock-star team
doing the software. We’ve put a bunch of game mechanics
in there, where you get badges, we’re going to start having leader boards
by area, you get points. It’s actually been pretty interesting. Just the wording of the badging, or how many points you get
for doing something, we see on a system-wide basis, like tens of thousands
of fifth-graders or sixth-graders going one direction or another,
depending what badge you give them. (Laughter) BG: And the collaboration
you’re doing with Los Altos, how did that come about? SK: Los Altos, it was kind of crazy. Once again, I didn’t expect it
to be used in classrooms. Someone from their board came and said, “What would you do if you had
carte Blanche in a classroom?” I said, “Well, every student
would work at their own pace, on something like this,
we’d give a dashboard.” They said, “This is kind of radical.
We have to think about it.” Me and the rest of the team were like,
“They’re never going to want to do this.” But literally the next day they were like,
“Can you start in two weeks?” (Laughter) BG: So fifth-grade math
is where that’s going on right now? SK: It’s two fifth-grade classes
and two seventh-grade classes. They’re doing it at the district level. I think what they’re excited about
is they can follow these kids, not only in school; on Christmas,
we saw some of the kids were doing it. We can track everything, track them
as they go through the entire district. Through the summers, as they go
from one teacher to the next, you have this continuity of data that
even at the district level, they can see. BG: So some of those views we saw
were for the teacher to go in and track actually
what’s going on with those kids. So you’re getting feedback
on those teacher views to see what they think they need? SK: Oh yeah. Most of those
were specs by the teachers. We made some of those for students
so they could see their data, but we have a very tight design loop
with the teachers themselves. And they’re saying,
“Hey, this is nice, but –” Like that focus graph,
a lot of the teachers said, “I have a feeling a lot of the kids
are jumping around and not focusing on one topic.” So we made that focus diagram. So it’s all been teacher-driven.
It’s been pretty crazy. BG: Is this ready for prime time? Do you think a lot of classes next school
year should try this thing out? SK: Yeah, it’s ready. We’ve got a million people
on the site already, so we can handle a few more. (Laughter) No, no reason why it really can’t happen in every classroom in America tomorrow. BG: And the vision of the tutoring thing. The idea there is,
if I’m confused about a topic, somehow right in the user interface, I’d find people who are volunteering, maybe see their reputation, and I could schedule and connect up
with those people? SK: Absolutely. And this is something
I recommend everyone in this audience do. Those dashboards the teachers have,
you can go log in right now and you can essentially become a coach for your kids, your nephews, your cousins, or maybe some kids
at the Boys and Girls Club. And yeah, you can start
becoming a mentor, a tutor, really immediately. But yeah, it’s all there. BG: Well, it’s amazing. I think you just got a glimpse
of the future of education. BG: Thank you.
SK: Thank you. (Applause)

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100 thoughts on “Let’s use video to reinvent education | Salman Khan”

  1. Aspie says:

    How can I find video that Sal mentions on 0:28?

  2. Ernest Meshack-Hart says:

    LOVE LOVE the "flip the classroom" concept! Wish I had had it growing up in school, it would have changed my life!

  3. Shannon Jones says:

    My first TED Talk and it was for the Khan Academy! I use this for my college developmental math and my son uses it for his elementary level math. This is a great program. This man Khan sounds like a guy I would like to meet!

  4. Aaron says:

    Can we just let Sal takeover the U.S. education system. Seriously, Common Core is bullshit.

  5. Jose Manuel Diaz Ruiz says:

    It´s incredible.

  6. Charvak Patel says:

    Hang that dislikers, Even Bill Gates understands that that guy is GOD.

  7. QUECO. says:

    Feels good to be smart

  8. Matheus Cardoso says:

    I cant even explain how proud and excited I am for living in times like these.

  9. Mcnally Bwambale says:

    I really prefer you on youtube than in person LOL!!!!!!!!!!!!

  10. Avarickan says:

    Didn't realize Khan academy had a practicing program. Just went through the test on rational exponents and I now understand them a lot better.

  11. Gautam Kevadiya says:

    nice video….

  12. James Soe says:

    You know what khan needs, science lessons for kids

  13. husbjorn says:

    He made a Youtube channel 100x more competent than most schools out there, and it's fucking free.. across the board FREE. This guy may be the reason to why kids of this generation and the next will be some of the most competent students to date. Something is terribly skewed with the world if Kissinger, Arafat and Obama are eligible for a Nobel Peace Prize and this guy isnt. Give it to him.. Now please..

  14. CityOfSky CityOfSky says:

    I heard about Salman Khan several days before, but I didn't take care, nor did I search for anything about him. Today I stumbled upon a problem in math, after a long time googling and reading, I decided to search for a video about it, then I found Khan Academy. It's so clear, concise and intuitive, what's more, it's even free! I just cannot believe it! Hats off to you, sir!

  15. Jonathan Moore says:

    why not homeschool, it's all here for them in a understandable presentation.

  16. Андрей Ястребов says:

    Cool video!!!

  17. BOGObiology says:

    I use flipped classroom and videos all the time in my teaching practice. I love it, but it's definitely been a huge time investment to make quality content for my students

  18. Dennis M says:

    The traditional schooling system has got to go. It is expensive and relatively ineffective. Time for online learning to become the backbone of the new system!

  19. ʟᴏɴᴇᴠᴇɴᴛʜᴏʀɪᴢᴏɴ says:


  20. The How-To Scholar: Education says:

    Khan Academy are easily the leaders in this field. I started my YouTube channel for my students two months ago and doing the "Flipped Classroom" model is THE BEST thing I've done teaching-wise! Highly recommend their services and their model!

  21. Himanshu Rana says:

    How does Khan Academy function without pay? It's not for profit, so do people just donate money?

  22. Aditya Lad says:

    Success is the moment when bill gates comes to meet you…inspired

  23. Ethan Minard says:

    Khan academy needs to be the new education system, nothing else, just him

  24. JaceBantfos says:

    i love how attentively he's listening to Gates 🙂

  25. azzuri09 says:

    still one of the best ted talks even after 6 years.

  26. Andrew Beardslee says:

    I hate this video

  27. Julius Ballaran says:


  28. Анна Куркина says:


  29. j l says:

    I sympathize with his awareness about education. When I did the test it was not strange that people did not fill the gap of knowledge. But after hearing his speech, I felt strange about it like he said. Also, his examples about these problems were interesting. I hope that the wonderful things he said will happen all over the world.

  30. Riain Healy says:

    >Gives me better education than every public school in America
    >Doesn't tax me for it
    I'm liking this Mr. Khan

  31. Family Lopez says:


  32. Ajit Navaraj says:

    Is there a link to the original calculus video ?

  33. Emma Lou says:

    mad respect for this guy

  34. tom keane says:

    Khan academy should create a course about learning how to learn and educational research so people can accelerate learning the rest of the courses.

  35. Zeeshan Hashim Zaidi says:

    Rajkumar Hirani should make a movie on this guy!

  36. Magus Zen says:

    Hella Hella Hella Fantastic!!

  37. jonathan camarena says:

    This guy gets it!

  38. Shahid Shaikh says:

    Pioneer of modern Education System.
    Khan Academy

  39. Areeba says:


  40. Shreyansh Singh says:

    great step for the transformation of present education system

  41. Selena Le & Healthy Lifestyle says:

    oh my god, how amazing this way he and his team doing now, thank you Khan

  42. Cristina Jean Donato says:

    I wish all teachers can be like him

  43. Ujjal Hossain says:

    thanks sal.sal should get nobel prize.

  44. Can We Get 1,000 Subscribers With No Videos? says:

    11:02 Cringe >_<

  45. Abhi Mag says:

    Khan is like crazy


    I love the education and how our society is changing a lot. Bless you. Best wishes from Huánuco – PERÚ.

  47. Uri Uchiha says:


  48. Jam Pablo says:

    Khan Academy made me realise of the good education that I’ve been deprived from having. I’ve learned so much through Khan Academy that never made sense in school. Thank you, sir!

  49. Akhter Syeda says:

    Why this doesn't have a billion views is beyond me

  50. gavo2394 says:

    This is brilliant

  51. Sakshi Juneja says:

    You are really a great person
    Sal khan sir you deserve NOBLE PRIGE

  52. Elongatedman 45 says:

    I am the only one who watch khanacadey in my classroom and they make fun of me,but they aren't any better

  53. Wade F says:

    I want some khan academy videos taught by Elon Musk ;D

  54. civil engineering vssut says:

    My Inspiration sal Khan

  55. DatBoi786 says:


  56. Puppal Akshitha says:

    This guy deserves a noble prize

  57. Hpauje Lasam says:


  58. Badre ELKASSMI says:

    Is he using Prezi for presentation ? Any idea guys ?

  59. Francine Williams says:

    I cannot get Khan academy on my Roku app..



  61. Robert Balejik says:

    He did more for education than all the govt programs did for billions of dollars. That's the power of the market

  62. marcia ferreira says:

    beibe do biruleibe avati toma no cu

  63. David Thistle says:

    This is an awesome concept and should be implemented in real world schools. It would provide the social interaction everyone is missing since the incorporation of cell phones in America.

  64. Ishab Poudel says:

    I wounder, why he doesn't stammer on his videos ?

  65. Greg Popovich says:

    He sounds like elon musk especially when he stutters.

  66. veonica217 says:

    A great Person!

  67. Menachem Ellenbogen says:

    Watching this video almost 8 years later has really given me an appreciation for much of a visionary Salman Khan was/is. As Salman predicted videos are being used today in classrooms as a substitute for classic lecture style learning environments. This, as Salman predicted, has this has enabled teachers to direct more of their time to help students who struggle which in the past was not possible. Internet videos have allowed students (and people in general) to use the internet as an extension of their own brain. As a student over the past decade, internet videos have always been available when I did not understand something that was talk in class. These videos have allowed me to constantly revisit them giving me the ability to relearn older material when I was ready to pay attention.

    As a future educator, I plan to incorporate internet videos into my classroom environment. Firstly, is a teacher watches some videos on the topic they are trying to present it allows to adjust their instructional plan based on a carefully curated and edited version of it; this allows the teacher to improve their teaching habits. Secondly, I plan on giving students (whenever possible) analogous videos to the lesson they are being taught; this allows students to have little perfect lessons whenever they need a reminder. Whenever there might not be a video available I may make my own videos for the students to refer too. It seems to me that videos have an essential part of the classroom and educators who do not consider using these videos are making their jobs harder.

  68. Linus Bucher says:

    14:03 you can see the e mail adress
    please correct that

  69. Super Hatless Bros 009 says:

    You are a super hero!

  70. Methis says:

    You are genius man.

  71. Jordan Lowry says:

    He kinda reminds me of ross from friends lol

  72. LUCKY VENUS says:

    Thanks to you l was able to have confidence in my study method! I really appreciate it.

  73. Khan Skywalker says:

    Khan is a leader. The same types that great ones in History were made of.

    The rest are politicians.

  74. sévérine says:

    Amazing, outstanding man.

  75. Kristian J. says:

    Whenever I feel overwhelmed in academics, I rewatch this video. Salman Khan has been more of a tutor, for me, than any other tutor / teacher, in my personal life, ever has. Even though the learning relationship is parasocial, I've benefited a lot from studying through Khan Academy. I feel truly grateful to him.

  76. Dragon50275 says:

    How is this the first time that I've ever seen the knowledge-node concept, even after visiting the site? It seems so much more intriguing than their current list-structure.

  77. Abid Ashraf says:

    You deserve nobal prize salman

  78. Roman Reigns says:

    khan academy I request to you to convert your all vedios in Hinglish.

  79. Menucha Feldstein says:

    What about learning languages?

  80. Евгений Доколен says:

    It's so freaking genius as it's simple!!!

  81. Doctor Syed says:

    Khan Academy is just Incredible,
    that helped a lot of students belongs to any aspects

  82. Jake Broe says:

    I'm over 2 million points on Khan Academy!

  83. thaintriguing1 says:

    I maybe late saying this but dude sounds like Jerry Seinfield doing standup

  84. learner learns says:

    Boring. What is this idiot Khan man try to say ? Lot of advertising for himself ! Ted is not the place to sell yrself but it’s the place to give and expand to people.

  85. John Doe says:

    I think Sal is amazing and I love the idea of switching the teaching model so that kids are watching the lectures at home and being helped with homework in class but what about the kids who live in homes without internet access?

  86. Jtn Jtnn says:

    I have to say, while I'm done with schooling I would love to have used Khan Academy at least as a help if not as an entire system to educate myself. I can only imagine this system as being more succinct, without teacher error (which happen more often as you move on to advanced topics), and more interesting as you basically can decide over a weekend where you don't have much to do to literally race through as much of the curriculum as possible. I think calling 10 straight correct answer mastery is a bit of a problem. It seems to me you'd need a bit more than that. Looking at Khan Academy's youtube channel I'm glad to see they are still churning out new educational material.

  87. Threelly AI says:

    I hate it when this happens…

  88. idr0ps says:

    I’ve always struggled with math, especially with algebra. My first PSAT score was 760 and boy was i embarrassed lol, my English/Reading carried my score. As I started to study more and more with Khan Academy, I started to improve a bit. I recently just got my second PSAT score and I scored a whopping 920! I improved by 160! I hope to continue improving my math, especially algebra and i also hope to improve on my next PSAT. I’d love to ace the SAT.

  89. martin schmidt says:

    Well, many of my students can hardly understand english, and many of them can hardly use a computer….so I still have to struggle in the classroom.

  90. Andrew Ortiz says:

    The Khan Academy website is all about school, work, jobs, businesses, EVERYTHING! 🌞

  91. Games TV says:

    and lets burn down the Universities.

  92. Samiya Parvez says:

    Thanks a lot✌️

  93. Ushasha Van As says:

    I love your program it has helped me a lot

  94. naila Saleem says:

    Sir tell me research topic iam student of bs Pakistan studies recently joined Ur academy iam impressed sir plz helpe

  95. Dylan Thorne says:

    It makes such perfect sense: "flip the classroom"

  96. Ginger Wu says:

    He has really helped me

  97. kenan1099 says:

    Sal looks pretty smug next to bill lmao

  98. ChuckTheNoris1 says:

    19:50 thought that was voldemort from Harry Potter for a second. Behind Sal.

  99. Andrew Ortiz says:

    +, Khan Academy is awesome for schools!

  100. KillerTacos says:

    God I love him

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