It's a geometric language.

And it's just limestone, nothing really special about it.

Where does your teacher keep the chalk?

Give me a piece of chalk.

Give me three pieces of chalk.

So each time

Bring me two pieces of chalk.

He took out a piece of chalk.

Please bring me two pieces of chalk.

Bring me a piece of chalk.

That is not a yellow piece of chalk.

And then with a white pencil, pastel like, I reinforce the lights.

Take this piece of chalk and write on the blackboard.

Before I die, I want to ...

It is not easy to write in chalk.

It is not easy to write with chalk.

And it's different than this limestone, you can see that.

The school board is empty The chalk has faded

And a lot of people might use structures like abalone shells,

Researchers began to record what Panbanisha said, by writing lexigrams on the floor with chalk.

Absolutely! I heard the snap.

Well, in Senegal we found that this was the traditional classroom

It may seem counterintuitive, but it accounts for little streams all over the planet.

A frame represents a hut in the woods.

But over the years, the blackboards were fine, but they ran out of chalk.

like spitting out food (Laughter) sidewalk chalk and even frozen wine.

The beams of light pass right through each other as you can check for yourself with two laser pointers and some chalk dust.

The Amazon is the second longest river in the world after the Nile.

River

From the stream?

The Rhone.

The river which flows through Paris is the Seine.

This river is three times longer than that one.

(Laughter)

The Nile is the longest river in the world.

The Thames is a river that flows through London.

The Mississippi is the longest river in the United States.

The Nile River is the longest in the world.

But it is invisible.

There is no surface fresh water.

kshisen

Yinchuan

Dnipro

River

Tiber