I think I was 23 before I came into the knowledge that glass was made from sand.
"What!?!" That idea was pretty much inconceivable to me.
The discovery probably came from wondering why you could recycle a porch full of cans, but beer bottles were hard to recycle - and you got like $2 per ton or some such thing. Lol. Such is the life of being twenty-something and living in a somewhat big house with a few friends.
Anyway... that isn't what I was going to tell you. :)
Today we made glass.
It took a long time.
Pretty much a really long time.
a couple hours
It was done,
and we had delicious glass.
Just get a cup of sugar (250 ml) and make sure you cook it on low in a stainless steel pan.
Stir it with a wooden spoon every now and again.
Pour it into a buttered pan straight out of the fridge.
That worked for us.
This idea came from the book Barron's Science Wizardry for Kids.