©Adam Crowley 2007

http://www.fi.edu/qa97/spotlight3/spotlight3.html

©Adam Crowley 2007

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

©Adam Crowley 2007

Flag Pole

Mini Blinds

Crane

©Adam Crowley 2007

©Adam Crowley 2007

• A straight rod or board• Turns on a point

known as a fulcrum.

©Adam Crowley 2007

Door Hinge

See-Saw

Wheel Barrow

Pull Tabs

©Adam Crowley 2007

©Adam Crowley 2007

• A wedge is an object with at least one slanting side

• It is an inclined plane that moves

• It ends in a sharp edge• Cuts or splits material apart

©Adam Crowley 2007

Knife

Scissors

Axe

©Adam Crowley 2007

©Adam Crowley 2007

• An inclined plane is a slanting surface

• Inclined means slanted – like a ramp

• It connects a lower level to a higher level

©Adam Crowley 2007

Ramps

Stairs

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©Adam Crowley 2007

• A wheel with a rod – called an axle

• Lifts or moves loads• Some “wheels” of a

wheel and axle don’t look like wheels

• Doorknob or faucet handle

©Adam Crowley 2007

Dump Trucks

Door Knob

WagonFaucet

©Adam Crowley 2007

©Adam Crowley 2007

•An inclined plane wrapped around a shaft or cylinder.

©Adam Crowley 2007

Bolts and Screws

Spiral Staircase

©Adam Crowley 2007

©Adam Crowley 2007

1. An axe is an example of a:a. Pulley b. Wedge c. Wheel and Axle

2. You would use a pulley to:a. Cut food b. Hold pieces of wood together c.

Help raise a flag

3. What is the name of a simple machine with a slanting surface?

4. The fixed point around which a lever turns is called a:

a. screw b. fulcrum c. door knob

5. A pull tab on a soda can is an example of a: a. inclined plane b. screw c. lever

©Adam Crowley 2007

• Edheads:http - www.edheads.org/activities/simple-machines/• Unitedstreaming - http://www.unitedstreaming.com• Findsounds - http://findsounds.com/• CA Dept. of Education: http://www.cde.ca.gov/be/st/ss/scgrade3.asp• Mikids - http://www.mikids.com/Smachines.htm• Inventor’s Toolbox -

http://www.mos.org/sln/Leonardo/InventorsToolbox.html• The Franklin Institute - http://www.fi.edu/qa97/spotlight3/spotlight3.html • Gettyimages -

http://creative.gettyimages.com/source/classes/FrameSet.aspx?&UQR=sbmupa&pk=4&source=front&lightboxView=1&txtSearch=gears&selImageType=7&chkLicensed=on&chkRoyaltyFree=on&chkNLM=on