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3rd Grade Machines
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What is this invention? What does it do?
It is a radio. It helps us receive information.
What is this invention? What does it do?
It is the phone. It helps us communicate.
What is this invention? What does it do?
It is a steam engine. It helps transport things using steam energy.
What is this invention? What does it do?
It is a printing press. It makes books, magazines and other papers quickly.
What are the different simple machines that make a bike?
Levers (brakes, handlebars), Wheels (wheels and gears)
What is a pulley? What is its function?
It is a simple machine. I uses a wheel and a rope to lift things.
What is a lever? What is its function?
It is simple. It moves things using a bar and pivot.
What is a ramp? What is its function?
It is a simple machine. It helps us raise and lower objects.
What are gears? What is their function?
They are simple. They are wheels with teeth and help things move.
What is a wheel? How does it work?
It is a simple machine. It rotates around an axle.
Is this a simple or complex machine? What type of energy does it use?
It is complex. It uses human/ manual energy.
Is this a simple or complex machine? What type of energy does it use?
It is complex. It uses electrical energy.
Is this a simple or complex machine? What type of energy does it use?
It is complex. It uses electrical energy.
Is this a simple or complex machine? What type of energy does it use?
It is simple. It uses human/ manual energy.
Is this a simple or complex machine? What type of energy does it use?
It is complex. It uses fuel/ gas energy.
Is this a simple or complex machine? What type of energy does it use?
It is complex. It uses fuel/ gas energy.
What is a complex machine?
Machines that are made of many components.
What is a simple machine?
A machine made from a small number of components.
Give an example of a complex machine.
Ex. bike, computer, telephone, etc.
Give an example of a simple machine.
Ex: pulley, ramp, inclined plane, wheel, lever, etc.
Name the two types of machines?
Simple and complex.
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