PrimeWire

You can now watch the entire Maddie's Do You Know? Season 4 Episode 2 movie online in high-definition quality, complete with English subtitles for a better viewing experience. Best of all, there’s no need to download anything—simply stream it directly from your device anytime, anywhere.

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.