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Simple Machines- Lecture Serena
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People sometimes use ramps
to move things that are hard to get up stairs.
Example:
A ramp helps people in wheelchairs get onto buses.
A ramp is also a simple machine.
You can use it to move things up or down.
🛝 Ramp
is a slanted surface.
Example:
An oar is a lever that helps you move a boat.
Lever is another kind of simple machine.
A lever makes it easier to move something.
⚖️ Lever
is a bar that balances on a point. It moves like a seesaw.
FACT:
Pulleys can be up high or down low.
How can we use pulleys?
The parts of a pulley work together to help us get flags up to the top of a flagpole.
A pulley makes it easier to lift heavy objects.
It also helps move things to high places.
🔁 Pulley
is a rope that moves over a wheel.
🏡
Using Simple Machines in the Yard
simple machine
is a tool that can make it easier to move things. Simple machines help people do work.
🧠 Learn
Sometimes things are hard to move. You might need help moving them.
❓ Essential Question
What are some kinds of simple machines?
📸 Read a Photo
What are these rakes helping the children do?
📖 Read Together
What are Simple Machines?
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