Learning Goal: Demonstrate an understanding of simple machines.
What is a Machine? Why do we need them?
A machine is a device with moving parts that does some desired work when it is provided with power.
Think of some examples...................................
What is a Simple Machine?
Simple Machines are tools that make work easier..
So what is work?
Here is Dr Skateboard's description of Work and Force.
So now let's take a look at Simple Machines.
Let's look at how each simple machine makes work easier to do.
Simple Machines make work easier do to because they give a
Mechanical Advantage.
Let's find out what mechanical advantage is.
Bill Nye talks about Mechanical Advantage.
............................Eureka! video about Mechanical Advantage.
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Go to the Simple Machines Part 1 assignment in your Google Drive, in 'Shared with you', and
answer questions 1 and 2. Come back to the front.
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We will start with the Wedge and the Lever:
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Go to the Simple Machines Part 1 assignment in your Google Drive, in 'Shared with you', and
answer questions 3 and 4. Come back to the front.
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Together, we will go through this Lever activity. Watch this video to see how it works.
We played with Harry and Pic on the teeter-totter, then collected information on how
the wedge worked.
Watch this video on how to do the next lever activity.
Gather information on what happens as you move your fulcrum under the lever.
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Go to the Simple Machines Part 1 assignment in your Google Drive, in 'Shared with you', and
answer questions 5,6,and 7. Come back to the front.
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