| A | B |
|---|
| Definition of a 1st Class Lever | Fulcrum is between the effort and the resistance. |
| Definition of a 2nd Class Lever | Resistance is between the fulcrum and the effort. |
| Definition of a 3rd Class Lever | Effort is between the fulcrum and the resistance. |
| Examples of 1st class levers | Scissors, seesaw or teeter-totter |
| Examples of 2nd class levers | Wheelbarrow, hinged door |
| Examples of 3rd class levers | Tweezers, staple puller |
| The fulcrum is where | the lever pivots (turns). |
| The effort is where | the work or power is applied. |
| The resistance is where | the load is applied. |
| These two parts act as one simple machine. They roll and are found on cars and bikes. | The wheel and axle. |
| A rope, a wheel with a groove in it and a weight make up this simple machine. | A pulley. |
| These simple machines are wheels with teeth on them that fit together when they are turned. | A gear. |
| This simple machine can be used to split things apart or hold a door open. | A wedge. |
| This simple machine is used to hold things together. It is made up of an inclined plane wrapped around a cylinder. | A screw. |
| A heavy object could be rolled up this simple machine, instead of lifting it straight up. | An inclined plane. |
| A Wheebarrow uses the following simple machines: | Inclined Plane, Lever, Wheel and Axle. |
| A hand drill (egg beater style) uses the following simple machines: | Wheel and Axle, Lever. Gear and Screw. |
| The manual Can Opener we demonstrated in class uses these simple machines: | Lever, Wheel and Axle, Gear and Wedge. |
| The Classroom Stapler uses the following simple machines: | Lever and Wedge. |
