1. Activity One: Getting Some Leverage on Simple MachinesWD
Simple Machines
Activity One: Getting Some Leverage on Simple Machines

2. Essential Questions What is a lever used for?WD
What is a lever used for?
What are the parts of a lever system?
How can I maximize the effectiveness of a lever system?

3. Vocabulary WD
Resistance Force (load): is the force which an effort force must overcome in order to do work on an object
Effort Force: the force used to move an object over a distance
Effort Distance: the distance from the effort (on a lever) to the fulcrum

4. Vocabulary Cont. WD
Lever: a simple machine that makes work easier for use; it involves moving a load around a pivot using a force
Fulcrum: the support about which a lever turns

5. Goals
Identify the effort force, the fulcrum, and the resistance force in a simple lever system.
Recognize that the placement of the effort force , the fulcrum, and the resistance force will affect the effectiveness of the lever system.
Be introduced to the effort force and the effort distance relationship.

6. Main Ideas WD
Simple machines are common tools that are used to accomplish tasks
A lever is a simple machine that is comprised of a fulcrum , an effort force, and a resistance force that must be overcome.

7. Main Ideas Cont. WD
The arrangement of the effort force, the resistance force, and the fulcrum affects the effectiveness of the lever system and its ability to accomplish a task.
The resistance force is sometimes referred to as the load force or simply the “load”. This is always a force and never an object.

8. What do I do? Read Activity 1 reading
Do Part A: Look at the tools and place them into categories.
Do Part B
Investigation Reflection
Read Investigation Further