1. Variables

2. Variable: any factor that can be changed, measured, or controlled. Variables are used in an experiment to help scientists test a hypothesis There are 3 different types of Variables

3. 1. Independent (manipulated) The One variable that is Purposely changed to test a hypothesis Remember: “I change the Independent”

4. 2. Dependent (responding) The variable you Measure. The variable that changes in Response to the independent variable. Remember: “Responds is the Responding”

5. 3. Controlled (constants) The variable or variables that stay the same, stay constant Remember: “Controlled are Constant”

6. “ DRY MIX ” DRY Dependent/Responding Variable plotted on Y-Axis MIX Manipulated/Independent Variable plotted on X-Axis

7. Example: Does the size of a paper airplane affect how far it flies? Independent: ___________________________ Dependent: ____________________________ Controlled: _____________________________

8. Example: Does the size of a paper airplane affect how far it flies? Independent: We change the Size of the paper Dependent: How far it flies, the distance, depends on how the independent variable Controlled: The paper type and the force at which it is thrown