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Series 1: 4. Bin Lorry and Newspaper
Maddie does the recycling. She uses a special camera to find out how a bin lorry works to lift a bin and tip the rubbish into the hopper. An animation reveals how a moving wall inside the lorry crushes the rubbish to make way for more. Next, Maddie visits a recycling plant to see how the rubbish is sorted. She then visits a paper mill to see how the old paper is recycled into newspapers.
Source: CBeebies
Most recent episodes of Do You Know?
Do You Know?
Series 1: 12. Helicopter Rotor And Tricycle
Maddie is out and about exploring different ways to travel. She visits an airfield and uses a special camera to find out how the rotor works to help make a helicopter fly. An an ...
18-07-2025
CBeebies
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Series 1: 11. Popcorn And Pasta
Maddie explores some favourite foods. She uses a special slow-motion camera to find out why popcorn pops. An animation shows what popcorn is made of and how a water droplet hidd ...
17-07-2025
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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 ...
16-07-2025
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Series 1: 9. Hot Water And Toothpaste
Maddie is preparing for bath time. She uses a special thermal-imaging camera to find out how the hot water system in a house works and then visits a reservoir to see where the w ...
15-07-2025
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Series 1: 8. Blood Pressure Monitor And Cast
Maddie visits a hospital. She uses a special light to see the blood vessels under her skin and finds out how a blood pressure monitor works to check that blood is flowing freely ...
14-07-2025
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Series 1: 7. Boat Propeller And Hot-air Balloon
Maddie is out and about exploring different ways to travel. She uses a special underwater camera to see a boat propeller in action and an animation reveals how the propeller pus ...
11-07-2025
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Series 1: 6. Cat Flap And Woolly Hat
Maddie meets some furry friends. She uses special cameras to find out how a digital cat flap works and how a tiny microchip unlocks the cat flap so the cats can go in and out of ...
10-07-2025
CBeebies
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Series 1: 5. Bike Chain And Tennis Ball
Maddie is outside being active. She uses a special camera to find out how the chain on a bicycle works to turn the wheels and how the front wheel and handlebars are used to stee ...
09-07-2025
CBeebies
Do You Know?
Series 1: 4. Bin Lorry And Newspaper
Maddie does the recycling. She uses a special camera to find out how a bin lorry works to lift a bin and tip the rubbish into the hopper. An animation reveals how a moving wall ...
08-07-2025
CBeebies
Do You Know?
Series 1: 2. Fire Engine Hose And Reflective Strips
Maddie looks at the emergency services. She uses a special camera to find out how the hose on a fire engine works and how the pump inside the fire engine creates pressure and se ...
07-07-2025
CBeebies
Most popular episodes of Do You Know?
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 ...
11-04-2025
CBeebies
Do You Know?
Series 1: 2. Fire Engine Hose And Reflective Strips
Maddie looks at the emergency services. She uses a special camera to find out how the hose on a fire engine works and how the pump inside the fire engine creates pressure and se ...
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Do You Know?
Series 1: 7. Boat Propeller And Hot-air Balloon
Maddie is out and about exploring different ways to travel. She uses a special underwater camera to see a boat propeller in action and an animation reveals how the propeller pus ...
11-07-2025
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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 ...
05-06-2025
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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 ...
30-05-2025
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Series 2: 22. Hand Dryer And Toilet Roll
In today's episode, Maddie is looking at things we use when we go to the toilet. She visits a factory to see how hand dryers work. She shows us how infrared light is used to swi ...
09-04-2025
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Series 4: 11. Snail And Tractor
Today, Maddie learns about how different things move! She is heading to a snail garden to see how a snail uses mucus and the muscles in its body, called its foot, to move. Maddi ...
21-04-2025
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Series 3: 15. Clouds & Rain And Radiator
In today’s episode, Maddie is finding out about the weather. She discovers why we have clouds and rain and how the water cycle works. We learn there are lots of different ...
24-11-2023
CBeebies
Do You Know?
Series 2: 13. Hairclippers And Ballet Shoes
Today, Maddie is dressing up. She visits a barber to find out how clippers work to cut hair. Using a special microscope camera, Maddie shows us how the blades work, and a slow-m ...
24-06-2025
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Do You Know?
Series 1: 18. Bus Ramp And Roads
Maddie is out and about exploring different ways to travel. She uses a special camera to find out how a bus ramp works to help people get on and off the bus. An animation shows ...
27-05-2025
CBeebies