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B1 中级 英语 15:37 Educational

How AI Could Save (Not Destroy) Education | Sal Khan | TED

TED · 2,121,685 次观看 · 添加于 3 天前

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00:04

So anyone who's been paying attention for the last few months

00:08

has been seeing headlines like this,

00:10

especially in education.

00:12

The thesis has been:

00:14

students are going to be using ChatGPT and other forms of AI

00:18

to cheat, do their assignments.

00:20

They’re not going to learn.

00:21

And it’s going to completely undermine education as we know it.

00:25

Now, what I'm going to argue today

00:27

is not only are there ways to mitigate all of that,

00:29

if we put the right guardrails, we do the right things,

00:32

we can mitigate it.

00:33

But I think we're at the cusp of using AI

00:35

for probably the biggest positive transformation

00:40

that education has ever seen.

00:42

And the way we're going to do that

00:44

is by giving every student on the planet

00:47

an artificially intelligent but amazing personal tutor.

00:51

And we're going to give every teacher on the planet an amazing,

00:54

artificially intelligent teaching assistant.

00:57

And just to appreciate how big of a deal it would be

01:01

to give everyone a personal tutor,

01:04

I show you this clip

01:07

from Benjamin Bloom’s 1984 2 sigma study,

01:10

or he called it the “2 sigma problem.”

01:12

The 2 sigma comes from two standard deviation,

01:14

sigma, the symbol for standard deviation.

01:16

And he had good data that showed that look, a normal distribution,

01:20

that's the one that you see in the traditional bell curve

01:23

right in the middle, that's how the world kind of sorts itself out,

01:26

that if you were to give personal 1-to-1 to tutoring for students,

01:31

then you could actually get a distribution that looks like that right.

01:34

It says tutorial 1-to-1 with the asterisks,

01:36

like, that right distribution,

01:37

a two standard-deviation improvement.

01:39

Just to put that in plain language,

01:41

that could take your average student and turn them into an exceptional student.

01:45

It can take your below-average student

01:47

and turn them into an above-average student.

01:50

Now the reason why he framed it as a problem, was he said,

01:54

well, this is all good,

01:55

but how do you actually scale group instruction this way?

01:58

How do you actually give it to everyone in an economic way?

02:02

What I'm about to show you is I think the first moves towards doing that.

02:06

Obviously, we've been trying to approximate it in some way

02:08

at Khan Academy for over a decade now,

02:10

but I think we're at the cusp of accelerating it dramatically.

02:14

I'm going to show you the early stages of what our AI,

02:17

which we call Khanmigo,

02:20

what it can now do

02:22

and maybe a little bit of where it is actually going.

02:25

So this right over here is a traditional exercise

02:28

that you or many of your children might have seen on Khan Academy.

02:31

But what's new is that little bot thing at the right.

02:35

And we'll start by seeing one of the very important safeguards,

02:39

which is the conversation is recorded and viewable by your teacher.

02:42

It’s moderated actually by a second AI.

02:45

And also it does not tell you the answer.

02:47

It is not a cheating tool.

02:48

When the student says, "Tell me the answer,"

02:50

it says, "I'm your tutor.

02:51

What do you think is the next step for solving the problem?"

02:54

Now, if the student makes a mistake, and this will surprise people

02:57

who think large language models are not good at mathematics,

03:00

notice, not only does it notice the mistake,

03:02

it asks the student to explain their reasoning,

03:05

but it's actually doing what I would say,

03:07

not just even an average tutor would do, but an excellent tutor would do.

03:10

It’s able to divine what is probably the misconception in that student’s mind,

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