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SIMPLE MACHINES LESSON

SIMPLE MACHINES LESSON. January 30, 2001 Ms. Ashby’s Third Grade Class. A machine is anything that helps us do work. A simple machine has few or no moving parts. There are 6 types of simple machines. 1. Inclined plane 2. Wedge 3. Screw 4. Lever 5. Wheel and Axle 6. Pulley.

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SIMPLE MACHINES LESSON

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  1. SIMPLE MACHINES LESSON January 30, 2001 Ms. Ashby’s Third Grade Class

  2. A machine is anything that helps us do work.

  3. A simple machine has few or no moving parts. • There are 6 types of simple machines. • 1. Inclined plane • 2. Wedge • 3. Screw • 4. Lever • 5. Wheel and Axle • 6. Pulley

  4. Inclined Planes • An inclined plane is a sloping surface that makes it easier to move objects to a higher or lower place. • An example of an inclined plane is a ramp.

  5. Inclined Planes • A slide is also an inclined plane.

  6. WEDGE • A wedge is a simple machine used to raise objects or split an object apart. • An ax is a wedge. It is used to split objects apart.

  7. WEDGE • A saw and a knife are wedges also.

  8. SCREW • A screw is a simple machine that is used to hold things together.

  9. SCREW • A jack is another example of a screw.

  10. LEVER • The lever reduces the amount of work needed to lift or move an object. • A rake is a lever used to move leaves.

  11. LEVER • A wheel barrow, a bottle opener, a see saw, and a crow bar are other examples of levers.

  12. WHEEL AND AXLE • The wheel and axle is a simple machine made up of a wheel connected to a post. The post is called the axle. • A wheel and axle help people lift a heavy load with less work.

  13. WHEEL AND AXLE • We use wheels and axles every day. Cars use wheels and axles.

  14. WHEEL AND AXLE • A doorknob is a wheel and axle .

  15. PULLEY • A pulley is a simple machine made up of a wheel with a rope or cable around the wheel. A pulley is used to raise a flag on a flagpole or to lift heavy objects.

  16. PULLEY • A pulley is used to raise a flag on a flagpole. A ski lift uses a pulley also.

  17. WHAT HAVE YOU LEARNED? • Name the 6 types of simple machines. • Look around the computer lab. Do you see any simple machines? If you do, draw a picture of the simple machine you see.

  18. THE END………

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