The video owner has disabled playback on external websites.

This video is no longer available on YouTube.

This video cannot be played right now.

Watch on YouTube

AI学習ツールを解放

登録して、すべての動画からより速く学べる強力なツールにアクセスしましょう。

シーン解説 フレーズハンター カードで復習 シャドーイング練習 トークバック
無料で登録
B1 中級 英語 9:12 Educational

Base 12 - Numberphile

Numberphile · 2,257,596 回視聴 · 追加日 3週間前

学習統計

B1

CEFRレベル

5/10

難易度

字幕 (174 セグメント)

00:00

JAMES GRIME: There are people out there who want to change

00:03

the way that you count.

00:05

They want to change the world so that we stop counting using

00:09

10 symbols and start counting using 12 symbols.

00:15

I love them.

00:16

I think these guys are great.

00:18

Let's talk about what we know so far.

00:19

So, the way we count is the decimal system.

00:22

It uses 10 symbols.

00:23

So, let's just write those out, first of all.

00:26

0, 1, 2, 8, 9.

00:30

Once we get to this point, we start to have to make our

00:33

numbers using combinations of the symbols we've already got.

00:36

12, 13, 14, 22, 23.

00:41

Now, if we had been born with six fingers on each hand, then

00:47

we would have 12 fingers, and maybe we would have started

00:51

using something called the dozenal system where it's

00:55

based on 12 symbols.

00:57

And there are some people out there who think this is the

00:59

system we should be using.

01:01

They think we should have six fingers on each hand.

01:05

They're disappointed we don't have six fingers on each hand,

01:09

because they think it's a much easier way to count.

01:12

So first of all, if we're going to use 12 symbols, I

01:15

need two extra.

01:16

Let's have a look at what they suggest.

01:18

For 10, we we're going to have a symbol like this.

01:22

That's called dek.

01:23

And for 11, we're going to have a symbol like this, which

01:27

is called el.

01:29

So now it reads 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, dek, el.

01:36

This would be 12.

01:38

In fact, they say do.

01:40

So this is do, do 1, do 2, do 3, do 4, do 5, do 6, do 7, do

01:47

8, do 9, do dek, and do el.

完全な字幕は動画プレーヤーで利用可能

練習問題に挑戦

この動画から語彙・文法・読解の練習問題を作成

語彙と文法 読解クイズ IELTS試験 ライティング練習
登録して練習
まだコメントがありません。最初に考えをシェアしましょう!

登録してすべての機能を解放しよう

進捗を追跡、単語を保存、演習で練習しよう

無料で語学を始める