PULLEY--SImple Machines

Go!

Please get a piece of paper

and something to write with.

wheel and axle

lever

screw

pulley

wedge

inclined plane

WORK

WORK:

Work happens when we apply a force to an object to MOVE that object.

Well?

Was the dog working?

What did he do?

Please write an explanation telling how the dog worked.

"I'm a

hard-working dog!"

The very busy dog used his nose to push the rock through the sand.

After he pushed the rock, the dog pulled it

back with his paws.

Force:

A force is a PUSH or

a PULL

Before we say goodbye...

How Do You Know?

Who is working?

and

I know the boy is working because

he is pushing the car.

Plant Watering wall

I know the men on the left are working because they are pushing the piano. The man on the right is working because he is pulling the piano.

Let's Review:

Lemonade Machine

I know kids on the swings are working because they are pushing and pulling themselves back and forth.

Who is working?

How Do You Know?

and

I know the man is working because he is pulling the weight.

Let's Review:

I know the three men on the left are working because they are pushing the slab. The man on the right is working too because he is pulling.

I know the horses are working because

they are pulling the plow.

"I Love my

rock!"

"Have a Good Day!"

Who is working?

How Do You Know?

and

I know________________________________

_____________________________________.

I know_________________________________

_____________________________________.

I know________________________________

_____________________________________.

Ideas for using

everyday stuff for

Rube Goldberg machine

What is work?

http://jiwismachines.com/education

5th grade R.G. machines

Chain reaction

Learning target:

Rube Goldberg simple animation

What Happened?

I can describe the order of events in a sequence .

Language target:

Very Basic Simple MAchine

In an oral discussion and in writing, I can describe

events in a sequence.

SEQUENCING...

1. Meet with your team and plan your machine.

5 minutes

Every Team MUST include at least TWO different simple machines in their design!

2. choose your materials

2 minutes

Once you have your materials

you CANNOT return for more today!

DAY 2

You will have another opportunity to choose additional materials on Tuesday and Wednesday.

1. Meet with your team and discuss your progress.

5 minutes

3. CREATE!!

What is NOT working?

What is working?

3 days

You will present your machines to the class on Thursday and Friday.

2. Do you have at least 2 simple machines?

Every Team MUST include at least TWO different simple machines in their design!

Day 3

1. Meet with your team and discuss your FINal plans.

5 minutes

Are all parts secure?

What needs fixing?

What do you still need to do?

Do you have at least 2 simple machines?

Get Ready to

Day 4

Do you have at least 2 simple machines?

Sequence

A sequence is the order in which something happened.

We use sequence words when we are telling a story, or repeating what happened.

DAY 1

1.

Simple Machines

Identify a minimum of 3 simple machines and describe how they work and why they are used.

Simple Machines Song

A simple machine is a machine that

makes work easier.

Where do we see wheels

and axles every day?

Wheel and Axle

levers

Pulley

pulley

A pulley is a simple machine made of a wheel with a rope around it.

It is used to lift heavy objects.

Simple machines have

few or no moving parts

A pulley uses grooved wheels and a rope to raise, lower, or move a load.

Lever

Where do you see pulleys every day?

To use a simple machine you only apply one force.

inclined plane

-

Something slopes when one

end or side is at a higher

level than the other.

Slope

:

Where do we see

levers every day?

The smaller the slope, the smaller the

force you need to move a load up the slope.

Biggest slope

Bigger slope

Small slope

small force

Bigger force

Biggest force

inclined plane

An inclined plane is a sloping ramp we use to move objects up or down.

lever

Lever

A lever is a bar that moves

on a fulcrum.

identify

Learning target:

I can

something

green!

wedge

I can identify the forces

of work and explain

how we use them.

A wedge is two inclined planes put together to

cut, split, or hold objects.

(label the parts)

Screw

Definition:

inclined plane

cylinder / shaft

screw

An inclined plane wrapped around a shaft or cylinder.

Number ____

Name of S.M.___________

_______________________

How it is used_________

_______________________

_______________________

_______________________

SIMPLE MACHINES

is work important?

...is work important?

...do we need to work?

We work because we need many things:

Food and water

Housing

Medical care

Clothing

and many more things