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### Course: Talks and interviews > Unit 1

Lesson 1: Conversations with Sal: Talks and presentations- Salman Khan: Let's use video to reinvent education | TED Talk | 2011
- Radio interview: Sal on AirTalk talking about his new book
- Salman Khan on Charlie Rose 2013
- Sal Khan on Digital and Physical Learning
- Year 2060: Education Predictions
- The Gates Notes: Sal on Khan Academy
- Khan Academy Computer Science Launch
- MIT 2012 Commencement Address
- Harvard Business School Class Day 2014
- Salman Khan at Rice University's 2012 commencement
- A Conversation with US Secretary of Education Arne Duncan
- Authors@Google: Salman Khan
- Khan Academy Vision and Social Return
- Using Khan Academy
- The learning myth: Why I'll never tell my son he's smart
- Sal Khan: Let's teach for mastery -- not test scores | TED Talk | 2015

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# Using Khan Academy

A primer from Sal on how to use Khan Academy.

## Want to join the conversation?

- Where do you do a brain fitness test?(7 votes)
- Im sorry, but you cant do those anymore, and i'm not sure why.(8 votes)

- Why can't you get the Atlas or Artemis badge?(5 votes)
- artemis u can get it long time ago u need to just master 300 skills but now it change so no one could get it and atlas u need to master 1500 skills witch is 2 more than khan has (khan only has 1498 skills) so thats why you get the Atlas or Artemis badge.(9 votes)

- How do you get Mastery in a skill!(8 votes)
- You must take the unit test to reach mastery.(2 votes)

- please be good person and vote up this comment please(7 votes)
- Where are the official programs?(3 votes)
- Official programs are programs meant to make for points. Or, you can accomplish missions, too!(5 votes)

- how do you post an answer(4 votes)
- Maybe it is when you post a reply? (I'm still a noob at this)(3 votes)

- How do you get Earth badges?(3 votes)
- You can get Earth badges by getting a high number of exercise questions (at least 42) quickly and correctly on the same skill, watch over 4 hours of video on the same topic, become a KA member for over 3 years, answering a question or posting an answer that receives a high number of votes (at least 25), or by achieving mastery in over 50 skills.(4 votes)

- what is a brain fitness test?(4 votes)
- I don't think those exist anymore.(1 vote)

- what are coaches and how can you get them?(2 votes)
- coaches are your teachers. if your class use's khanacademy, then your teacher would give everyone in the class a code so u can get assignments from your teacher thru khanacademy. that's the reason i have khanacademy.(4 votes)

- Is this like another or older version, because mine in
**totally**different?(3 votes)- Yes, Khan Academy has updated over the years. The 2021 Khan Academy is very different from the 2011 one. This video is kind of out of date.(1 vote)

## Video transcript

- [Voiceover] Welcome to the Khan Academy. The goal of this video is to show you all the different things
that Khan Academy has. It has videos, it has exercises, it has an adaptive,
super, I guess you could call it robot tutor
thing that will guide you through content and
make sure you master it. So let's just take each
of those one by one. Many of y'all are probably
coming to this saying, "Hey, I have an exam tomorrow on DNA," or "I didn't understand quite
what's happening in class." There the best thing to do might just be go to the search bar,
let me make sure you can see the search bar, to
go to the search bar and you could search for DNA. When you do that you see your first choice right over is a DNA video. This is actually the main video on DNA and which you could start watching. Or if you look to the
right right over here, you see that there's
all other related videos under heredity and genetics. Then you can start browsing from there. You could say, "Okay,
let me back up a second. "Let me go back to just all of biology." I can see all of the sections are there. Similarly, you might wanna search for something in mathematics. You might wanna say,
"Oh, I have a question "about quadratics." Quadratics. I'm gonna do a search there. Okay, well let's see, there's something about using the quadratic formula, factoring quadratics 2. I don't know which of
these is right for me, so let me just go into one of these and start getting a little bit of context. You see that what I
actually just clicked on is actually an exercise that gets me to solve quadratics by factoring two. I need to write my answer here. If I don't know the answer,
I have a bunch of hints. If this all looks like Greek to me, I can click on a video that solves a very similar problem. Or I might hey, this isn't
what I was looking for. But look over here, they're solving a quadratic equation by factoring. Factoring quadratic equations. Maybe this is what I need to learn. Or maybe I'm not even
thinking about this stuff, so let me just move up a level to quadratic equations. Now I can see the whole topic here. Solving quadratics by taking square root. Solving quadratics by factoring. Completing the square,
the quadratic formula. Quadratic equation, graphing quadratics. In general if you just wanna browse, you say "Let me just see all the subjects "that are available on Khan Academy." You can go this drop-down right over here. This starts to give you
a sense of the breadth of the content on Khan Academy. Just in math, each of
these is an entire subject. K-2nd math, you have pre-calculus, goes all the way up to
multivariable calculus, intergal calculus. If I were to click on
any one of these things, it's going to take me into
something called a mission. A mission is going to give
me a set of exercises. We call this right over
here the mission warm-up. Based on how I perform on
these calculus questions, the system is starting to get a sense of what I know and don't
know and it will use that to give me guided practice
so I can learn more and more and more calculus. Eventually mastering calculus. At any point if I have difficulty, there's always videos
here that will help me understand the actual calculus. Once I'm done with that, I
will go to this dashboard and it'll just tell me
about how much have I progressed in integral
calculus, what have I mastered, what have I not practiced yet, what are my different badges. If you do not wanna move immediately into this mission world and you wanna say what does Khan Academy have when it comes to calculus in an unguided way, that's where you go view full list of integral calculus content. Then you will go to this page, where you see the breadth and scope of the integral content. Integrals, integration techniques, integration applications,
sequences and series, AP calculus practice problems. If you click there, you see the different tutorials within, indefinite integrals as anti-derivative, area
under a rate function as net change. Hopefully that gives you sense of things. We don't just have math and we don't just have science, we have whole section here on computer programming,
which is tons of fun where you can write your
own computer program. I'm using my son's account right now. This is a computer program that we wrote. This right here is a computer program that we wrote together the other day. It was good father/son bonding time. And we have things in
the arts and humanities, like history and art history, which is also very, very, very exciting. And we have partner content. We have partner content from the likes of The Museum of Modern Art, Explortorium, JP Getty Museum, The British Museums. So a lot of stuff here. Hopefully this video gives you a flavor of the different ways
you can use Khan Academy.