Catch up TV
Series 3: 20. X-Ray and Sock
In today’s episode, Maddie explores how our body works. She visits a children’s hospital to find out what happens when we have an X-ray. She meets James, who has broken his arm, as well as a radiographer. We see what happens when we have an X-ray and learn how the X-ray machine takes a picture of the bones inside our body before saving the picture on a special machine.\n\nNext, Maddie heads to a factory where they make socks in lots of different colours out of yarn. Maddie uses her slow-motion camera to give us a special view when the sock-turning machine sucks in the socks and flips them out the right way around. They look like wiggly snakes!
Source: CBeebies
Most recent episodes of Do You Know?
Do You Know?
Series 4: 8. Floating And Sand
Today, Maddie’s at sea! First she visits a boating lake, using her special underwater cameras to find out how the hull of a boat is shaped to help it float on water. She l ...
08-05-2024
CBeebies
Do You Know?
Series 4: 7. Bike Bell And Line Markings
Today, Maddie is on her bike! She visits a bike workshop to find out why different bike bells make different ringing sounds. Maddie uses her special slow-motion camera to see in ...
07-05-2024
CBeebies
Do You Know?
Series 4: 6. Radio Telescope And Maze
Today, Maddie is finding things! First, she visits an observatory to see how a really big radio telescope uses powerful computers to collect radio waves from space and turn them ...
06-05-2024
CBeebies
Do You Know?
Series 4: 5. Drinking Water And Carrot
In this episode, Maddie visits a reservoir that collects water from our homes, natural springs and the rain. She heads to a draw-off tower, which takes water from the reservoir ...
03-05-2024
CBeebies
Do You Know?
Series 4: 4. Hula Hoop And Tent
Maddie is playing outdoors. She finds out how we move our bodies to keep a hula hoop up in the air and learns how a hula hoop uses something called centripetal force to keep it ...
02-05-2024
CBeebies
Do You Know?
Series 4: 3. Electric Car And Wind
Maddie visits an electric car factory to find out how an electric car works. She learns that an electric car uses batteries and electricity to make the energy it needs to move. ...
01-05-2024
CBeebies
Do You Know?
Series 4: 2. Bird's Nest And Helmet
In this episode, Maddie learns all about strong structures. She goes to a nature reserve to find out how a bird makes its nest using twigs, moss, leaves and dried grass. She als ...
30-04-2024
CBeebies
Do You Know?
Series 4: 1. Starlight And Stop-frame Animation
In this episode, it’s night-time! Maddie visits a planetarium to learn how stars work. She discovers that stars are made in space by dust and gas, and when they press toge ...
29-04-2024
CBeebies
Do You Know?
Series 4: 20. Speaker And Colour
Today, Maddie is using her senses to see and hear! She visits a speaker factory to understand what happens when we listen to music from a speaker. With the help of her special s ...
26-04-2024
CBeebies
Do You Know?
Series 4: 19. Lamp And Playhouse
Today, Maddie finds out about things you might have in your home! She visits a lamp workshop to discover how a lamp lets us see in the dark. She learns that inside a light switc ...
25-04-2024
CBeebies
Most popular episodes of Do You Know?
Do You Know?
Series 4: 6. Radio Telescope And Maze
Today, Maddie is finding things! First, she visits an observatory to see how a really big radio telescope uses powerful computers to collect radio waves from space and turn them ...
06-05-2024
CBeebies
Do You Know?
Series 1: 25. Cake And Soft Play
Maddie is getting ready for a party. She uses a special camera and animation to find out how cake ingredients work together to make cake sponges rise in the oven. Next, Maddie v ...
03-05-2023
CBeebies
Do You Know?
Series 4: 7. Bike Bell And Line Markings
Today, Maddie is on her bike! She visits a bike workshop to find out why different bike bells make different ringing sounds. Maddie uses her special slow-motion camera to see in ...
07-05-2024
CBeebies
Do You Know?
Series 2: 8. Train Tracks And Paint
In today's episode, Maddie is at a train museum finding out how signal boxes work and how trains are moved from one track to another to get to the right place. Maddie puts her s ...
18-05-2022
CBeebies
Do You Know?
Series 4: 3. Electric Car And Wind
Maddie visits an electric car factory to find out how an electric car works. She learns that an electric car uses batteries and electricity to make the energy it needs to move. ...
01-05-2024
CBeebies
Do You Know?
Series 2: 12. Traffic Lights And Emergency Lights
In today's episode, Maddie is looking at useful lights. She shows us how traffic lights work so that vehicles can travel safely through a road junction. She visits a traffic con ...
24-05-2022
CBeebies
Do You Know?
Series 2: 10. Lifeboat And Concrete
She goes on a training rescue mission with a lifeboat team to find out how the equipment on a lifeboat works. She shows us how the special thermal-imaging cameras are used to fi ...
20-05-2022
CBeebies
Do You Know?
Series 1: 10. Water Park And Ice Cream
Maddie goes for a fun day out. She visits an indoor water park and uses a special waterproof camera and animation to show how a water slide works. She then goes underneath the s ...
12-04-2023
CBeebies
Do You Know?
Series 2: 11. Aeroplane And Trainers
Today, Maddie is on the move. She gets on board an aeroplane and shows us all the buttons inside the cockpit and how they work. Then she sits alongside Bridget, a pilot, in a fl ...
23-05-2022
CBeebies
Do You Know?
Series 1: 21. Magnets And Teddy Bears
Maddie is looking at toys. She uses a special slow-motion camera to find out how the magnets on a train set work. An animation shows how the north and south poles on magnets wor ...
27-04-2023
CBeebies