Catch up TV
Series 2: 9. Handwash and Vacuum
In today's episode, Maddie is cleaning up. She visits a factory where hand wash is made and uses her special camera to see inside a big vat to see the colour being mixed. Next, Maddie visits an appliance testing centre to find out how a vacuum cleaner works. She takes apart a vacuum cleaner to show us all the different parts and, using her special camera, show us how air gets sucked up through the machine so the filter can collect all the dirt and dust from our carpet!
Source: CBeebies
Most recent episodes of Do You Know?
Do You Know?
Series 1: 22. Escalator And Wheelbarrow
Maddie is at a shopping centre. She uses special cameras to find out how an escalator works to move people from one floor to another. An animation shows the hidden cogs and chai ...
13-03-2025
CBeebies
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 ...
12-03-2025
CBeebies
Do You Know?
Series 1: 20. Eggs And Bread
Maddie is making breakfast in the kitchen. She visits a farm to see where eggs come from and uses a special thermal imaging camera to show why eggs change colour when they're co ...
11-03-2025
CBeebies
Do You Know?
Series 1: 19. Dishwasher And Table
Maddie is in the kitchen. She uses a special waterproof camera to see how the dishwasher works to clean dirty dishes. An animation shows what happens inside once the door is clo ...
10-03-2025
CBeebies
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 ...
09-03-2025
CBeebies
Do You Know?
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
Do You Know?
Series 1: 16. Lock & Key And Glass
Maddie explores the house. She uses a special camera and animation to see how a key works inside a lock and shows how the hidden barrel and pins inside the lock work, to allow t ...
07-03-2025
CBeebies
Do You Know?
Series 1: 15. Crane And Bricks
Maddie visits a building site. She uses a special camera to see how a big crane works to move heavy objects from one place to another. An animation shows how the hydraulic mecha ...
06-03-2025
CBeebies
Do You Know?
Series 1: 14. Carousel And Wax Crayons
Maddie goes for a fun day out. She visits a fairground and goes for a ride on a carousel, using a special camera to find out how it works. An animation shows how the carousel go ...
05-03-2025
CBeebies
Do You Know?
Series 1: 13. Toilet Flush And Toilet
Maddie is in the bathroom. She uses a special underwater camera to find out how a toilet flush works and why it makes a gurgling sound. An animation shows how the float ball and ...
04-03-2025
CBeebies
Most popular episodes of Do You Know?
Do You Know?
Series 1: 15. Crane And Bricks
Maddie visits a building site. She uses a special camera to see how a big crane works to move heavy objects from one place to another. An animation shows how the hydraulic mecha ...
06-03-2025
CBeebies
Do You Know?
Maddie's Do You Know: At Christmas: 1. Reindeer And Christmas Decorations
Maddie goes on a Christmas adventure as she meets Santa's favourite helper, the reindeer, and discovers how Christmas decorations are made. She learns how reindeer keep warm in ...
24-12-2024
CBeebies
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 ...
05-02-2025
CBeebies
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 ...
25-02-2025
CBeebies
Do You Know?
Series 2: 15. Disco Ball And Jigsaw Puzzle
In today's episode, Maddie is having fun. She takes to the dance floor to show us how a disco ball works. We learn how light is reflected in lots of different ways, and a specia ...
27-05-2022
CBeebies
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 ...
26-02-2025
CBeebies
Do You Know?
Series 1: 14. Carousel And Wax Crayons
Maddie goes for a fun day out. She visits a fairground and goes for a ride on a carousel, using a special camera to find out how it works. An animation shows how the carousel go ...
05-03-2025
CBeebies
Do You Know?
Series 3: 11. Cereal And Potato Harvester
Maddie visits a farm to show us how a potato harvester works - picking out and sorting the potatoes growing in the ground. She uses her special cameras to see how the machine pu ...
20-11-2023
CBeebies
Do You Know?
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 ...
06-02-2025
CBeebies
Do You Know?
Series 1: 20. Eggs And Bread
Maddie is making breakfast in the kitchen. She visits a farm to see where eggs come from and uses a special thermal imaging camera to show why eggs change colour when they're co ...
11-03-2025
CBeebies