Catch up TV
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 water comes from and how it is sent to our homes. \n\nNext, Maddie visits a toothpaste factory to see how toothpaste is made from different ingredients and uses a special slow-motion camera to find out how the stripes get inside a tube of stripy toothpaste.
Source: CBeebies
Most recent episodes of Do You Know?
Do You Know?
Series 4: 18. Airport Baggage And Rucksack
Today, Maddie is learning all about baggage! She visits an airport to see how baggage goes from the check-in desk and onto an aeroplane using something called a destination tag, ...
10-08-2022
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Series 4: 17. Car Ferry And Globe
In today’s episode, Maddie learns about land and water! Maddie visits a port to find out how cars are loaded onto a ferry so they can be carried across the water. She then ...
09-08-2022
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Series 4: 16. Forklift And Dried Fruit
In today’s episode, Maddie visits a forklift warehouse. She discovers how a forklift truck uses something called counterbalance to lift things really high without tipping ...
08-08-2022
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Series 4: 15. Climbing Wall And Modelling Clay
Today, Maddie is learning about colourful things! She visits a climbing wall centre, where she finds out how colourful holds on the wall help us to climb up it. And we learn how ...
05-08-2022
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Series 4: 14. Neon Sign And Revolving Door
In today’s episode, Maddie is out and about! She finds out how revolving doors can let lots of people in and out of buildings at the same time. She visits a revolving door ...
04-08-2022
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Series 4: 13. Kaleidoscope And Envelope
In today’s episode, Maddie is looking inside things! We look inside a kaleidoscope to learn how it uses three mirrors called a triangular prism to make colourful patterns. ...
03-08-2022
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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 ...
02-08-2022
CBeebies
Do You Know?
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 ...
01-08-2022
CBeebies
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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 ...
29-07-2022
CBeebies
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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 ...
28-07-2022
CBeebies
Most popular episodes of Do You Know?
Do You Know?
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 ...
02-08-2022
CBeebies
Do You Know?
Series 4: 16. Forklift And Dried Fruit
In today’s episode, Maddie visits a forklift warehouse. She discovers how a forklift truck uses something called counterbalance to lift things really high without tipping ...
08-08-2022
CBeebies
Do You Know?
Series 2: 1. Shipping Container And Bubble Packaging
In today's episode Maddie is on the move. She finds out how things that we use every day are brought to us on big ships and moved around the country in shipping containers ...
09-05-2022
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Do You Know?
Series 3: 2. Plant And Compost
Maddie is finding out about the life cycle of plants! She visits a gigantic tomato growing farm and uses her special time-lapse camera to discover how a plant germinates from a ...
14-06-2022
CBeebies
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Series 2: 14. Playground And Plant Pot
In today's episode, Maddie is having fun outdoors. First, she's in a playground learning how we keep swinging on a swing and how gravity helps us slide down a slide. S ...
26-05-2022
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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 ...
06-05-2022
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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 ...
19-04-2022
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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
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Do You Know?
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 ...
13-04-2022
CBeebies
Do You Know?
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 pixe ...
02-06-2022
CBeebies