Catch up TV

This episode is currently not available.

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 moving around in a circle. Maddie attaches a tiny special camera to the hula hoop so we can see centripetal force in action! \n\nNext, Maddie heads to a tent factory to see how they are made. She sees how lots of pieces of a waterproof material called nylon are cut out in one go using a special table that pushes out air to help the material move around. Then she uses her time-lapse camera to put up her own tent so we can see how all the parts of a tent work together to help it stay up and keep us dry from the rain.

Source: CBeebies

Most recent episodes of Do You Know?

Do You Know?

Do You Know? - Series 1: 11. Popcorn And Pasta

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 ...

15-05-2025

CBeebies

All episodes

CBeebies

Do You Know?

Do You Know? - Series 1: 10. Water Park And Ice Cream

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 ...

14-05-2025

CBeebies

All episodes

CBeebies

Do You Know?

Do You Know? - Series 1: 9. Hot Water And Toothpaste

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 ...

13-05-2025

CBeebies

All episodes

CBeebies

Do You Know?

Do You Know? - Series 1: 8. Blood Pressure Monitor And Cast

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 ...

12-05-2025

CBeebies

All episodes

CBeebies

Do You Know?

Do You Know? - Series 1: 7. Boat Propeller And Hot-air Balloon

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 ...

09-05-2025

CBeebies

All episodes

CBeebies

Do You Know?

Do You Know? - Series 1: 6. Cat Flap And Woolly Hat

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 ...

08-05-2025

CBeebies

All episodes

CBeebies

Do You Know?

Do You Know? - Series 1: 5. Bike Chain And Tennis Ball

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 ...

07-05-2025

CBeebies

All episodes

CBeebies

Do You Know?

Do You Know? - Series 1: 4. Bin Lorry And Newspaper

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 ...

06-05-2025

CBeebies

All episodes

CBeebies

Do You Know?

Do You Know? - Series 1: 2. Fire Engine Hose And Reflective Strips

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 ...

05-05-2025

CBeebies

All episodes

CBeebies

Do You Know?

Do You Know? - Series 4: 20. Speaker And Colour

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 ...

02-05-2025

CBeebies

All episodes

CBeebies

Most popular episodes of Do You Know?

Do You Know?

Do You Know? - Series 4: 5. Drinking Water And Carrot

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

All episodes

CBeebies

Do You Know?

Do You Know? - Series 4: 6. Radio Telescope And Maze

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 ...

14-04-2025

CBeebies

All episodes

CBeebies

Do You Know?

Do You Know? - Series 1: 17. Piano And Drums

Series 1: 17. Piano And Drums

Maddie looks at musical instruments. She uses a special slow-motion camera to find out how a piano works and how the keys on the piano are attached to levers and hammers. She sh ...

08-03-2025

CBeebies

All episodes

CBeebies

Do You Know?

Do You Know? - Series 4: 16. Forklift And Dried Fruit

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 ...

28-04-2025

CBeebies

All episodes

CBeebies

Do You Know?

Do You Know? - Series 2: 16. Posting A Letter And Colouring Pencils

Series 2: 16. Posting A Letter And Colouring Pencils

In today's episode, Maddie is sending a letter in the post to the CBeebies house. She finds out how posting a letter works as she follows the letter's journey from the post box ...

01-04-2025

CBeebies

All episodes

CBeebies

Do You Know?

Do You Know? - Series 2: 4. Clock And Cutlery

Series 2: 4. Clock And Cutlery

Today, Maddie is finding out how clocks tell the time. She heads to a clock factory and uses a special time-lapse camera to show how the hands on the clock move around. Maddie a ...

20-03-2025

CBeebies

All episodes

CBeebies

Do You Know?

Do You Know? - Series 2: 12. Traffic Lights And Emergency Lights

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 ...

28-03-2025

CBeebies

All episodes

CBeebies

Do You Know?

Do You Know? - Series 4: 14. Neon Sign And Revolving Door

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 ...

24-04-2025

CBeebies

All episodes

CBeebies

Do You Know?

Do You Know? - Series 1: 10. Water Park And Ice Cream

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 ...

14-05-2025

CBeebies

All episodes

CBeebies

Do You Know?

Do You Know? - Series 4: 8. Floating And Sand

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 ...

16-04-2025

CBeebies

All episodes

CBeebies

© 2025 - Catchupplayer.co.uk