Glass explores what glass is, where it comes from, how it's made, what its properties are, and what it is used for.

Metal explores what metal is, where it comes from, how it's made, what its properties are, and what it is used for.

Rock explores what rock is, where it comes from, how it's made, what its properties are, and what it is used for.

Rubber explores what rubber is, where it comes from, how it's made, what its properties are, and what it is used for.

Wood explores what wood is, where it comes from, how it's made, what its properties are, and what it is used for.