Maddie learns how a speaker works and discovers how colours in paint and light are made.

Maddie learns how a lamp works and visits a factory to see how a playhouse is made.

Maddie learns how baggage gets onto an aeroplane and finds out how a rucksack is made.

Maddie finds out how a ferry can transport cars over water and learns how a globe is made.

Maddie discovers how a forklift truck works and learns how dried fruit is made.

Maddie learns how a window cleaning cradle works and finds out how shadows are made.

Maddie finds out how a snail moves and discovers how a tractor is made in a factory.

Maddie learns how glass is recycled and visits a factory to discover how jam is made.

Maddie learns how road sweepers clean our streets and how paper straws are made.

Maddie learns why things float and discovers how sand on a beach is made.

Maddie learns how bike bells make a ringing sound and how line markings are made.

Maddie learns how a radio telescope collects radio-waves and finds out how a maze is made.

Maddie visits a reservoir, a draw-off tower and a water treatment plant to find out about how we get our drinking water. Afterwards, she goes to a farm to learn about how carrots are grown.

Maddie finds out how we use our bodies to keep a hula hoop up in the air with something called centripetal force, as well as heading to a tent factory to find out how tents are made from nylon

Maddie visits an electric car factory to learn how an electric car works and how they make the energy they need to move. Afterwards, she heads to the beach to find out how hot and cold air make wind.

Today, Maddie learns all about strong structures. She goes to a nature reserve to learn about birds' nests before heading to a bike helmet factory to find out about a material called carbon fibre.

In this episode, Maddie visits a planetarium to learn all about stars, including how they're made and how our sun is a star. Later, she finds out all about stop-frame animation and how it's filmed