Earlier quoted context omitted.
OTOH creating neural connections takes time. It's a real distance. Small for us, but great for the cells. That's why explaining difficult concepts too fast, while cool for people getting things instantly, is not good for general population.
I very much agree and it saddens me often when I see folks dial it up to 1.5x or 2x "because it is boring otherwise". They might think they just get as much, only in half the time, but I'd hypothesize that they retain less because the mind needs some time to digest. Similar with the trend to auto-cut pauses that speakers make, just to cram in more text into a youtube video. Destroys not just the pacing but any chance…
Why Sal Khan't: On Learning by Making but Teaching by Telling
101–110 of 126 posts
Re: Why Sal Khan't: On Learning by Making but Teaching by Telling
#102Overall, I do agree with the thesis but: > Now… how does Sal Khan want my kid to learn? > Watch a video. I find this a little uncharitable. I learned a lot of math at a young age from Sal Khan's early videos (back when he used to erase by switching to a black pen and scribbling across the entire screen) and, to put it in the author's terms, it served as an easy-to-digest scaffolding on top of which to build a deeper…
Side note, but much as I like Khan Academy overall, I've always struggled with Sal's slow and repetitive speaking style in the videos. "Now you add the five ... [pause] ... add the five ... add the five to the seven ... to the seven..." Running them at 1.5 - 2x helps a bit, but it's still annoying to the point that I find it very distracting.
Personally I like it.
Re: Why Sal Khan't: On Learning by Making but Teaching by Telling
#103Khan Academy has a problem lately: Go visit a page like https://www.khanacademy.org/math/linear-algebra and count the number of: * cookie banners * donation panhandling modals * account signup widgets * gamification modals to tell you about leveling up * etc It does not communicate that their primary goal is to educate, it feels more like the primary goal is fuelling the bureaucracy behind the charity.
Re: Why Sal Khan't: On Learning by Making but Teaching by Telling
#104This resonates so much with me. I am the co-founder of a microschool and also a neuroscientist. And these two have intersected so much in fascinating ways. Four years in, the big lesson for us is that for learning to make sense it should have the following progression: meaning, motivation, mechanics, measurement.
Conventional schooling, and everything designed to help with conventional schooling like Khanmigo give in to this systemic gravitational pull of measurement (we must know what they are learning). And from that ensues your standardized curriculum, measuring the visible and easy, because that's easier than something like "mathematical thinking", and the focus on mechanics (multiplication tables, fractions, chemical names, whatever). And in doing this we leach out all meaning and focus on the drills.
Chatbots, the way they are set up now, are doomed to fail because the entry point is mechanics. "How do I solve this particular quadratic equation?" It's a meaningless question to a child because it simply does not connect to their world. We cannot start with that and work Socratically towards meaning. We must instead offer or build a world where meaning and sense-making are possible. (Wrote about this here https://blog.comini.in/p/why-khanmigo-will-fail )
Personally interesting for me is how meaning-making and sense-making are essentially the core of conscious experience. We, bundles of experiences, cohere and conspire and collaborate to create a meaningful experience from the sensory data that assaults us. Data that would be meaningless without a perspective.
So in education we are doing the same thing that the mind does so effortlessly by existing and being in the world and grappling with it. But we shoot ourselves in the foot by taking a reductive lens and split it into elements.
That's worked well for us only until we encountered complex adaptive systems that need us to also focus on the whole. But the system has been built to focus on the narrow and hope that these come together at some point. And so we end up with this meaning crisis we are all navigating, in school and outside.
More about Meaning before Mechanics here: https://blog.comini.in/p/schooling-has-a-meaning-crisis-para...
Re: Why Sal Khan't: On Learning by Making but Teaching by Telling
#105Overall, I do agree with the thesis but: > Now… how does Sal Khan want my kid to learn? > Watch a video. I find this a little uncharitable. I learned a lot of math at a young age from Sal Khan's early videos (back when he used to erase by switching to a black pen and scribbling across the entire screen) and, to put it in the author's terms, it served as an easy-to-digest scaffolding on top of which to build a deeper…
The attacks on Khan here personally irked me. I grew up in a small rural town where math teachers were rare and good ones were nonexistent. I still remember watching Sal Khan's videos on calculus after struggling to get any grip on it from my frustratingly uninterested teacher who was forced into the position after our actual teacher retired. After I saw them I came back with a fire in me because for the first time h…
No good deed goes unpunished.
Re: Why Sal Khan't: On Learning by Making but Teaching by Telling
#106I grew up in India watching the early Sal Khan videos because I preferred them. They complemented school and helped me understand things I’d ignored in class or simply hadn’t been taught well.
You can critique the limits of videos without dismissing teachers who have genuinely helped millions of people learn.
Re: Why Sal Khan't: On Learning by Making but Teaching by Telling
#107Whenever this topic comes up I feel the urge to point out that not enough people have read Audrey Watter's "Teaching Machines: The History of Personalized Learning" , or her blog. We might stop repeating the same mistakes over and over again if we did. [0] https://direct.mit.edu/books/book/5138/Teaching-MachinesThe-... [1] https://2ndbreakfast.audreywatters.com/
My belief is that Khan Academy is tremendously useful when started at a young age and done consistently. I have been doing it for over 7 years and it was a huge portion of my childhood. Long term, consistent use of KA from a young age builds deep procedural fluency and (this is very IMPORTANT:) self-directed discipline that transform how a student handles complex concepts. Even though some critics correctly note and…
Also, 3B1B got his start at Khan Academy so that definitely counts for something.
But if we're in the context of classrooms, and discussions of how one might change the roles of teachers using computers, then I'm getting wary. Especially when a lot of money is involved from investors who do not care to study history because it might not fit their desired narrative.
Re: Why Sal Khan't: On Learning by Making but Teaching by Telling
#108Earlier quoted context omitted.
> materials that were much better Do you have few examples?
Personally I like books, but there are also many, many lecture videos on YouTube, some of them excellent (though I think they could still be better with bigger production teams and higher budgets). For college-level technical subjects, there are also e.g. many MIT lectures on OCW. If you have a specific topic in mind, I urge you to search around. (Making a long list of my own book/website/video recommendations about…
There are? I know an OCW course includes "lecture notes" pdfs. Does it have the lectures too?
For example, the course "distributed systems" is available on OCW as 6.824, from spring 2006: https://ocw.mit.edu/courses/6-824-distributed-computer-syste...
MIT has renumbered the course, but it's still around: https://pdos.csail.mit.edu/6.824/ . Don't be fooled by the URL; it's now 6.5840.
And a series of lectures is available too: https://www.youtube.com/@6.824/videos . They're from spring 2020. They link to the course website for spring 2020, which is great. But it doesn't link to them, and OCW doesn't know about any of this, as far as I can tell. The 6.824 lecture series is pretty hard to discover, too, because it's uploaded by an account dedicated solely to that one course, which isn't related to any other MIT lecture videos.
Re: Why Sal Khan't: On Learning by Making but Teaching by Telling
#109Overall, I do agree with the thesis but: > Now… how does Sal Khan want my kid to learn? > Watch a video. I find this a little uncharitable. I learned a lot of math at a young age from Sal Khan's early videos (back when he used to erase by switching to a black pen and scribbling across the entire screen) and, to put it in the author's terms, it served as an easy-to-digest scaffolding on top of which to build a deeper…
I have benefited a good deal from Khan Academy, and was quite disappointing to go back and see that they seem even more focused on showing videos than they did 10 years ago.
Re: Why Sal Khan't: On Learning by Making but Teaching by Telling
#110Off-topic and may be found rude - I find multiple instances of "Kahn" in the comments. Is it really that difficult to put in the effort to learn the correct spelling of "Khan" specially when it is everywhere in TFA, the post title, and other comments?
A couple of days ago it was Ghandi instead of Gandhi. I understand it's not a big deal. But it's also not a big deal to get the spelling right.
Of course many Indian languages have aspirated and unaspirated "d" sounds, for example, and this is also reflected in the English dialet. But most of us English speakers can't hear the difference very well even if we concentrate.