Our Essential Question for this unit is: How do simple machines use force and motion to make work easier?
When we finish this unit, here are some of the things students should understand:
- Simple machines are used in everyday life to move objects and make work easier.
- A force is any push or pull on an object;
- An object's size and the amount of force exerted on an object affects its speed and motion;
- Force causes objects to start or stop moving or change direction;
- Gravity affects the motion of all objects; and
- List and identify the six simple machines - lever, inclined plane, wheel & axle, pulley, wedge, and screw.
- Explain the uses of the six simple machines; and
- Describe and / or demonstrate the use of the six simple machines.
Our important vocabulary terms are:
- Simple Machines
- inclined plane
- wheel and axle
Wedge (video coming soon)
Screw (video coming soon)
Force & Motion
- Observe how force affects speed and motion;
- Explain what happens to the speed or direction of an object when a greater force than the initial one is applied;
- Describe and/or demonstrate how a force affects speed, motion, direction, and position
- Demonstrate the effect of gravitational force on the motion of an object;
- Predict the force needed to moved different objects; and
- Demonstrate how a force can change the direction of an object already in motion.
- gravitational force
Here are some Flash Cards you can use to study these at home!
Discovery Education Video clips- Teacher Reference