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Maddie's Do You Know?
Season 1
Episode 12

Helicopter Rotor and Tricycle

September 20, 2016

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Maddie's Do You Know? - S1 - E12

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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 animation shows how changing the angle of the rotor blades makes the helicopter go forwards and backwards. Next, Maddie visits a workshop to see how a tricycle is constructed from a big box of parts and to see how the tricycle can be adapted to suit a user's needs.

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Maddie's Do You Know?: Season 1 - 25 Episode s

1x1 - Hamster Wheel and Insect Hotel
September 5, 2016
Maddie meets some furry friends and creepy crawlies. She visits a pet shop and uses a special night-vision camera to find out how a hamster wheel works and how far a hamster can run in a single night. Next, Maddie visits a factory to see how an insect hotel is made from wood and bamboo and uses a slow-motion camera to show how a drill creates holes in the wood for the insects to hide in.
1x2 - Fire Engine Hose and Reflective Strips
September 6, 2016
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 sends water to the hose. Next, Maddie sees how an ordinary white car is made into a police car using special blue and yellow reflective stickers. A microscope camera reveals the tiny prisms inside the stickers, which make them bright and shiny.
1x3 - Fizzy Water and Yoghurt
September 7, 2016
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 bubbles and then keep them 'hidden' until the bottle is opened. Next, Maddie visits a dairy to see how milk is collected from cows and taken to a factory in a tanker. She then sees how the factory turns the milk into yoghurt.
1x4 - Bin Lorry and Newspaper
September 8, 2016
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 inside the lorry crushes the rubbish to make way for more. Next, Maddie visits a recycling plant to see how the rubbish is sorted. She then visits a paper mill to see how the old paper is recycled into newspapers.
1x5 - Bike Chain and Tennis Ball
September 9, 2016
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 steer. Next, Maddie visits a factory to see how rubber, collected from trees, is made into tennis balls using a series of heavy presses. A microscopic camera reveals the special material used to cover the tennis balls with a furry coat.
1x6 - Cat Flap and Woolly Hat
September 12, 2016
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 the house. Next, Maddie visits a sheep farm to see how a fleece is sheared from a sheep. She then goes to a mill to see how the fleece is washed, spun and dyed and turned into wool. The finished wool is then knitted into a woolly hat.
1x7 - Boat Propeller and Hot Air Balloon
September 13, 2016
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 pushes the boat through the water. Next, Maddie visits a factory to see how a hot air balloon is made from lots of pieces of material sewn together. She then joins a balloon team outside to take a ride in a finished hot air balloon.
1x8 - Blood Pressure Monitor and Cast
September 14, 2016
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 around our bodies. Maddie then visits the plaster room and shows how a cast is made by having one put on her arm. She uses a special microscope camera to reveal how the fiberglass strands are woven together to make the cast strong.
1x9 - Hot Water and Toothpaste
September 15, 2016
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. Next, 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.
1x10 - Water Park and Ice Cream
September 16, 2016
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 swimming pool to see what happens inside the pump room to pump the water to the top of the slide. Next, Maddie visits a factory to see how ice cream cones are made from a type of batter and how special hot plates are used to create the criss-cross waffle pattern.
1x11 - Popcorn and Pasta
September 19, 2016
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 hidden inside each kernel of corn expands as it is cooked, making it pop. Next, Maddie visits a pasta factory to see how flour is mixed with water and turned into pasta dough and how special cutters are used to create different pasta shapes.
1x12 - Helicopter Rotor and Tricycle
September 20, 2016
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 animation shows how changing the angle of the rotor blades makes the helicopter go forwards and backwards. Next, Maddie visits a workshop to see how a tricycle is constructed from a big box of parts and to see how the tricycle can be adapted to suit a user's needs.
1x13 - Toilet Flush and Toilet
September 21, 2016
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 plug work together to refill the cistern after it has flushed. Next, Maddie visits a toilet factory to see how toilets are made from clay and how robots spray the toilets with a special paint to make them waterproof and shiny.
1x14 - Carousel and Wax Crayons
September 22, 2016
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 goes round and how the crankshaft works to move the horses up and down. Next, Maddie visits a factory to see how different coloured wax crayons are made from paraffin oil and how a big mold creates hundreds of crayons in one go.
1x15 - Crane and Bricks
September 23, 2016
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, hidden inside the boom arm, enables the crane to extend high into the sky. Next, Maddie visits a factory to see how bricks are made from clay, shaped by rectangular molds, and then fired in hot kilns for several days to make them strong.
1x16 - Lock and Key, and Glass
October 24, 2016
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 the matching key to unlock it. Next, Maddie shows how sand is made into glass. She visits a glass-blowing workshop to see how sand is turned into molten glass and then worked by the glass-maker into a brightly coloured glass vase.
1x17 - Piano and Drums
October 25, 2016
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 shows how the strings inside the piano vibrate to produce musical notes. Next, Maddie visits a factory to see how a drum is made from lots of thin wooden sheets pressed together and shaped in a circular mould. She uses a special camera to see how the drum is given its shiny finish.
1x18 - Bus Ramp and Roads
October 26, 2016
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 how the ramp is hidden in a compartment underneath the doors and how airbags allow the bus to lower on one side. Next, Maddie joins a road-building team to see how a motorway is made of different layers and uses a special thermal imaging camera to see how the hot asphalt is laid.
1x19 - Dishwasher and Table
October 27, 2016
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 closed and how the spray arms spin to spread the water around. Next, Maddie visits a sustainable forest to see where wood comes from and to see how trees are felled. She then goes to a furniture workshop to see how the wood is made into a wooden table.
1x20 - Eggs and Bread
October 28, 2016
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 cooked. Next, Maddie visits a mill to see how kernels of wheat are ground and turned into flour. She then visits a factory to find out how the flour is made into different types of bread and baked in a very large oven.
1x21 - Magnets and Teddy Bears
October 31, 2016
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 work and why a magnetic field can pull magnets together or push them apart. Next, Maddie visits a factory to see how teddy bears are made, with eyes, ears and joints, and uses a special microscope camera to see the fibres of the stuffing.
1x22 - Escalator and Wheelbarrow
November 1, 2016
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 chains inside the escalator which make the steps move. Next, Maddie visits a factory to see how wheelbarrows are made from metal sheets to help people move heavy things around outside. She attaches a special camera to a big robot to see it working.
1x23 - Car Brakes and Car
November 2, 2016
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 and pads and how they move to slow down and stop the car. Next, Maddie visits a factory to see how a car is made from a large roll of steel sheeting. She uses special cameras to show how robots work with people to put the different parts of the cars together.
1x24 - Zips and Screen Printing
November 3, 2016
Maddie looks at clothes. She uses a special microscope camera to look at the zip on her hoodie. An animation shows how the slider works to pull the two rows of teeth together to close the zip. Next, Maddie visits a workshop to see how a dinosaur picture is screen printed onto a t-shirt. Her special microscope camera shows how a stencil, created on a screen, allows the ink to pass through and create the design.
1x25 - Cake and Soft Play
November 4, 2016
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 visits a factory to see how a soft play centre is made. She uses a special microscope camera to look at the foam stuffing and sees how all the pieces are sewn together to make play shapes. Finally, she sees how an airbrush is used to make the wings of a rocking parrot.

Maddie's Do You Know?: All seasons

S1: Season 1
25 Episode s
S2: Season 2
25 Episode s
S3: Season 3
25 Episode s
S4: Season 4
20 Episode s
S5: Season 5
3 Episode s

Create Your AI Girlfriend!

1x1 - Hamster Wheel and Insect Hotel

1x2 - Fire Engine Hose and Reflective Strips

1x3 - Fizzy Water and Yoghurt

1x4 - Bin Lorry and Newspaper

1x5 - Bike Chain and Tennis Ball

1x6 - Cat Flap and Woolly Hat

1x7 - Boat Propeller and Hot Air Balloon

1x8 - Blood Pressure Monitor and Cast

1x9 - Hot Water and Toothpaste

1x10 - Water Park and Ice Cream

1x11 - Popcorn and Pasta

1x12 - Helicopter Rotor and Tricycle

1x13 - Toilet Flush and Toilet

1x14 - Carousel and Wax Crayons

1x15 - Crane and Bricks

1x16 - Lock and Key, and Glass

1x17 - Piano and Drums

1x18 - Bus Ramp and Roads

1x19 - Dishwasher and Table

1x20 - Eggs and Bread

1x21 - Magnets and Teddy Bears

1x22 - Escalator and Wheelbarrow

1x23 - Car Brakes and Car

1x24 - Zips and Screen Printing

1x25 - Cake and Soft Play

S1: Season 1

S2: Season 2

S3: Season 3

S4: Season 4

S5: Season 5