1. A runner has two pairs of running shoes
A runner has two pairs of running shoes. To find out which pair will allow her to run faster, she puts on the first pair and runs around the track once in exactly 2 min. She puts on the second pair and runs around the track again, this time, making it in 2 min and 10 sec. She decides the first pair is better, and heads to the store to return the second pair.

2. What is the runner trying to test
What is the runner trying to test? That is, what question is she trying to answer?

3. Do you think her experiment can answer the question she is trying to answer? Why or why not?

4. Do you think both pairs of sneakers are treated fairly in the experiment or does one have better chances than the other? Why or why not?

5. Are there any factors that might have interfered with her experiment
Are there any factors that might have interfered with her experiment? If so, what are they?

6. What did the runner assume when she designed this experiment?

7. Independent Variable: Dependent Variable: Extraneous Variables:
In your groups:
Independent Variable:
Dependent Variable:
Extraneous Variables:
Controlled Variables:
Control Group:

8. Independent variable - the variable that is purposely changed in an experiment.

9. Independent variable - the variable that is purposely changed in an experiment.
Controlled variable - the variables that are kept the same during an experiment.

10. Independent variable - the variable that is purposely changed in an experiment.
Controlled variable - the variables that are kept the same during an experiment.
Dependent variable - the variable that is changed depending on the value of the independent variable

11. Independent variable - the variable that is purposely changed in an experiment.
Controlled variable - the variables that are kept the same during an experiment.
Dependent variable - the variable that is changed depending on the value of the independent variable
Extraneous variables - variables that are not or cannot be controlled that could interfere with and experiment.

12. Control group - a group in which everything is the same as the test group except that the independent variable stays the same.

13. *Complete Student Organizer Activity One - Part One

14. *In groups: design an experiment for the runner that would help her make a sounder decision regarding the sneakers.
*Use Student Organizer Activity One - Part Three

15. Share your experiments

16. *Discuss in groups: If you roll a pencil from an incline, will it roll twice as far as a pencil rolled from half as high up the incline?