Glass is made by melting sand with high heat, shaping the melted sand/glass mixture on a metal bar, then rapidly cooling it by plunging the shaped glass into water to harden it into its final form.

1. How they make glass

2. They used sand and
melt it.

3. They put a metal bar in
the hot sand/glass

4. They put it in water to
cool it

5. They shape the glass

6. Then its done

7. That is how glass is
made