The goal of this video is to show you

本視頻的目的是向您展示

all the different things that Khan Academy has.

可汗學院 可汗學院所擁有的一切。

It has videos, it has exercises,

它有視頻，有練習、

it has an adaptive, super, I guess you could

它有自適應功能、 超級，我想你可以

call it robot tutor thing that will guide you

稱之為機器人導師 指導你的東西

through content and make sure you master it.

內容，並 確保您掌握它。

So let's just take each of those one by one.

是以，讓我們逐一 一個一個來。

Many of y'all are probably coming to this saying,

你們中的許多人可能 會這麼說、

"Hey, I have an exam tomorrow on DNA," or

"嘿，我明天有一場關於 DNA 的考試"，或者

"I didn't understand quite what's happening in class."

"我不太明白 課堂上發生了什麼"

There the best thing to do might just be

最好的辦法可能是

go to the search bar, let me make sure you can

進入搜索欄、 讓我確保你能

see the search bar, to go to the search bar

查看搜索欄 轉到搜索欄

and you could search for DNA.

你可以搜索 DNA。

When you do that you see your first choice

當你這樣做時，你會看到你的首選

right over is a DNA video.

右邊是 DNA 視頻。

This is actually the main video on DNA

這實際上是關於 DNA 的主要視頻

and which you could start watching.

您可以開始觀看。

Or if you look to the right right over here,

或者，如果你看 右邊這裡、

you see that there's all other related videos

你會看到 所有其他相關視頻

under heredity and genetics.

遺傳和基因。

Then you can start browsing from there.

然後就可以開始瀏覽了。

You could say, "Okay, let me back up a second.

你可以說："好吧、 讓我倒回去一下。

"Let me go back to just all of biology."

"讓我回到生物學"

I can see all of the sections are there.

我可以看到所有部分都在那裡。

Similarly, you might wanna search

同樣，您也可以搜索

for something in mathematics.

數學方面的東西。

You might wanna say, "Oh, I have a question

你可以說 "哦，我有個問題

"about quadratics."

"關於四則運算"

Quadratics.

四則運算

I'm gonna do a search there.

我要在那裡搜索一下。

Okay, well let's see, there's something

好吧，讓我們來看看，有些東西

about using the quadratic formula,

關於二次公式的使用、

factoring quadratics 2.

四則運算 2.

I don't know which of these is right for me,

我不知道 哪個適合我？

so let me just go into one of these

讓我來介紹其中一個

and start getting a little bit of context.

並開始瞭解一些背景情況。

You see that what I actually just clicked on

你看，我 點擊的是

is actually an exercise that gets me

實際上是一種鍛鍊，讓我

to solve quadratics by factoring two.

通過兩個因式分解來解四則運算。

I need to write my answer here.

我需要在這裡寫下我的答案。

If I don't know the answer, I have a bunch of hints.

如果我不知道答案、 我有很多提示。

If this all looks like Greek to me,

如果這一切在我看來都像希臘語的話、

I can click on a video

我可以點擊視頻

that solves a very similar problem.

解決了一個非常類似的問題。

Or I might hey, this isn't what I was looking for.

或者我可能會嘿嘿，這不是 這不是我要找的

But look over here, they're solving

但看這邊，他們正在解決

a quadratic equation by factoring.

一元二次方程的因式分解。

Factoring quadratic equations.

二次方程因式分解

Maybe this is what I need to learn.

也許這正是我需要學習的。

Or maybe I'm not even thinking about this stuff,

或者我根本 想這些東西、

so let me just move up a level

讓我更上一層樓

to quadratic equations.

到一元二次方程。

Now I can see the whole topic here.

現在我可以在這裡看到整個主題了。

Solving quadratics by taking square root.

通過求平方根解二次方程。

Solving quadratics by factoring.

用因式分解法解二次方程

Completing the square, the quadratic formula.

完成平方、 二次公式

Quadratic equation, graphing quadratics.

一元二次方程，二次方程作圖。

In general if you just wanna browse,

一般來說，如果你只是想瀏覽一下、

you say "Let me just see all the subjects

你說："讓我看看所有的主題

"that are available on Khan Academy."

"可汗學院提供的"。

You can go this drop-down right over here.

你可以從這裡下拉。

This starts to give you a sense of the breadth

這讓您開始 的廣度

of the content on Khan Academy.

的內容。

Just in math, each of these is an entire subject.

就數學而言，每 就是一整個科目。

K-2nd math, you have pre-calculus,

K-2 年級的數學是微積分預科、

goes all the way up to multivariable calculus,

直到 多元微積分、

intergal calculus.

星際微積分。

If I were to click on any one of these things,

如果我點擊 這些東西中的任何一個、

it's going to take me into something called a mission.

它將帶我進入 一個叫 "任務 "的東西

A mission is going to give me a set of exercises.

一個任務要給我 我有一套練習。

We call this right over here the mission warm-up.

我們把這個 任務熱身

Based on how I perform on these calculus questions,

根據我在 這些微積分問題、

the system is starting to get a sense

系統開始感覺到

of what I know and don't know and it will use that

我知道的和不知道的 它將利用這些資訊

to give me guided practice so I can learn more

指導我練習 讓我學到更多

and more and more calculus.

以及越來越多的微積分。

Eventually mastering calculus.

最終掌握微積分。

At any point if I have difficulty,

在任何時候，如果我有困難、

there's always videos here that will help me

總有視頻 會對我有所幫助

understand the actual calculus.

瞭解實際的計算。

Once I'm done with that, I will go to this dashboard

完成後，我 將轉到這個儀表板

and it'll just tell me about how much have I

它只會告訴我 我有多少錢

progressed in integral calculus, what have I mastered,

在積分 我掌握了什麼？

what have I not practiced yet,

我還沒練成什麼？

what are my different badges.

我有哪些不同的徽章。

If you do not wanna move immediately

如果您不想立即搬家

into this mission world and you wanna say

你想說

what does Khan Academy have when it comes

可汗學院

to calculus in an unguided way,

在沒有指導的情況下學習微積分、

that's where you go view full list

查看完整列表

of integral calculus content.

積分內容。

Then you will go to this page,

然後您將進入此頁面、

where you see the breadth and scope

在這裡您可以看到

of the integral content.

的整體內容。

Integrals, integration techniques,

積分，積分技術、

integration applications, sequences and series,

整合應用、 序列和系列、

AP calculus practice problems.

AP 微積分練習題。

If you click there, you see the different

點擊這裡，您會看到不同的

tutorials within, indefinite integrals

內部教程，不定積分

as anti-derivative, area under a rate function

作為反導，面積 下的面積

as net change.

作為淨變化。

Hopefully that gives you sense of things.

希望這能讓你有所瞭解。

We don't just have math and we don't just

我們不只有數學，也不只有

have science, we have whole section here

有科學，我們這裡有整個部分

on computer programming, which is tons of fun

計算機編程、 樂趣無窮

where you can write your own computer program.

在這裡您可以編寫自己的 自己的計算機程序。

I'm using my son's account right now.

我現在用的是我兒子的賬戶。

This is a computer program that we wrote.

這是我們編寫的計算機程序。

This right here is a computer program

這是一個計算機程序

that we wrote together the other day.

是我們前幾天一起寫的。

It was good father/son bonding time.

這是很好的父子親子時光。

And we have things in the arts and humanities,

我們在 藝術和人文學科、

like history and art history,

比如歷史和藝術史、

which is also very, very, very exciting.

這也非常、非常、非常令人興奮。

And we have partner content.

我們還有合作伙伴內容。

We have partner content from the likes of

我們的合作伙伴內容來自

The Museum of Modern Art, Explortorium,

現代藝術博物館，Explortorium、

JP Getty Museum, The British Museums.

JP 蓋蒂博物館，大英博物館。

So a lot of stuff here.

所以這裡有很多東西。

Hopefully this video gives you a flavor

希望這段視頻能給您帶來一些啟發

of the different ways you can use Khan Academy.

的不同方式 使用可汗學院的不同方式。