Catch up TV
Series 3: 10. Wind-Up Toy and Cricket Bat
In today’s episode it’s playtime! Maddie is finding out about wind-up toys and how they move along. We see inside a wind-up truck and Maddie uses her special cameras to show us how the spring inside gets tighter and tighter and stores energy so that when it is released the cogs inside move the wheels. Next, Maddie visits a factory where cricket bats are made from willow trees, because it’s bouncy and strong. First the tree trunk is cut using a chainsaw and we learn how the wood is shaped using lots of different cutting and sanding machines. We see inside a robot that is shaped like a pineapple! Maddie uses her special slow-motion camera to see all the wood shavings flying off as the bat takes shape.
Source: CBeebies
Most recent episodes of Do You Know?
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Series 4: 18. Airport Baggage And Rucksack
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Series 4: 17. Car Ferry And Globe
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Series 4: 16. Forklift And Dried Fruit
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28-04-2025
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Series 4: 15. Climbing Wall And Modelling Clay
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25-04-2025
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Series 4: 14. Neon Sign And Revolving Door
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24-04-2025
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Series 4: 13. Kaleidoscope And Envelope
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23-04-2025
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Series 4: 12. Window Cleaning Cradle And Shadow
Maddie heads to a tall building to find out how a window cleaning cradle works. She discovers how really strong metal cables lift and lower the cradle, which uses tracks to move ...
22-04-2025
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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 4: 10. Glass Recycling And Jam
In today’s episode, Maddie is learning all about glass! She visits a glass recycling centre to see how the glass from our homes is recycled. When the glass arrives to the ...
18-04-2025
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Series 4: 9. Road Sweeper And Paper Straw
In today’s episode, Maddie is finding out about machines that use suction! She heads to a road sweeper depot to learn how all the parts of a road sweeper work together, c ...
17-04-2025
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Series 1: 23. Car Brakes And Car
Maddie goes for a drive in the car. She uses a special microscope camera to find out how car brakes work. An animation shows how the brake pedal is connected to the brake discs ...
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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 ...
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Series 4: 5. Drinking Water And Carrot
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Series 2: 22. Hand Dryer And Toilet Roll
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Series 1: 9. Hot Water And Toothpaste
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Series 1: 3. Fizzy Water And Yoghurt
Maddie looks at food and drink. She uses a special slow-motion camera to find out how bubbles get inside a bottle of fizzy water. Animation shows how gas is used to create the b ...
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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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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 ...
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Series 5: 3. Farming Robots And 3d Printer
Maddie visits a robot workshop where they design farming robots that help farmers grow crops. She meets three farming robots, Tom, Wilma and Richard that work together on the fa ...
11-07-2021
CBeebies