Catch up TV
Series 3: 21. Tram and Map
Maddie has a day out, starting by travelling on a tram. She finds out how it moves using electricity from wire cables above. Maddie jumps on board, and using her special cameras, she shows us how the tram stays in contact with the wire by making an electric circuit to give it the energy it needs.\n\nNext, Maddie finds out how maps are made. She meets a surveyor at a new housing estate, who uses a special satellite to mark new roads and houses on a map. Then she visits a mapmaking centre where they keep the Master Map and learns how cartographers make new maps of the UK.
Source: CBeebies
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Series 2: 22. Hand Dryer And Toilet Roll
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Series 2: 21. Fish Tank And Bath
In today's episode, Maddie finds out about things that use water. She visits an aquatic centre to show us how a fish tank works, using a special underwater camera to explain how ...
05-09-2025
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Series 2: 20. Kite And Wind Turbine
In today's episode, Maddie is outdoors finding out about things that use the wind. She finds out how a kite works when it flies high in the sky, shows us how to measure the wind ...
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Series 2: 19. Television And Carpet
In today's episode, Maddie is relaxing at home, playing games and watching television. She shows us how a television screen works using millions of tiny squares called pixels. U ...
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Series 2: 18. Lift And Spacesuit
In today's episode, Maddie is finding out about things that go up and down. She shows us how a lift works, when it carries people up and down between floors of a building. With ...
02-09-2025
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Most popular episodes of Do You Know?
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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 ...
08-09-2025
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Series 2: 25. Refrigerator And Mushrooms
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Series 2: 23. Prosthetic Limb And Detection Dog
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Series 2: 24. Barcode And Fish Cake
In today's episode, Maddie is visiting a supermarket, where she finds out what barcodes are and how they work. At the checkout, we learn how an infrared scanner reads barcodes t ...
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Series 2: 21. Fish Tank And Bath
In today's episode, Maddie finds out about things that use water. She visits an aquatic centre to show us how a fish tank works, using a special underwater camera to explain how ...
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Series 2: 19. Television And Carpet
In today's episode, Maddie is relaxing at home, playing games and watching television. She shows us how a television screen works using millions of tiny squares called pixels. U ...
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Series 2: 20. Kite And Wind Turbine
In today's episode, Maddie is outdoors finding out about things that use the wind. She finds out how a kite works when it flies high in the sky, shows us how to measure the wind ...
04-09-2025
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Series 2: 18. Lift And Spacesuit
In today's episode, Maddie is finding out about things that go up and down. She shows us how a lift works, when it carries people up and down between floors of a building. With ...
02-09-2025
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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 ...
26-08-2025
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