Pretend that you are pumpkin farmer. You are having a problem with groundhogs eating holes in your pumpkins. You want to test whether or not spraying a natural pepper-based repellant will prevent groundhogs from eating holes in the pumpkins. In half of

1
Pretend that you are pumpkin farmer. You are
having a problem with groundhogs eating holes in
your pumpkins. You want to test whether or not
spraying a natural pepper-based repellant will
prevent groundhogs from eating holes in the
pumpkins. In half of the pumpkin patch you spray
the pumpkins with pepper repellent and after a
month you count the number of holes. In the
other half of the pumpkin patch you test your
control for a month. Write the hypothesis you
would use to test your solution.
2
Answer might vary some.
If I spray 2 squirts pepper repellent on the each
of the pumpkins in half the patch for a month
then I will have 50 less holes compared to those
that were not sprayed because the spray will
irritate their mouth when they bite into pumpkins.
3

• Go back to slide one and identify the
• Independent variable
• Dependent variable
• Control
• Three constants

4

• Independent variable- Pepper repellent
• b. Dependent variable- Number of holes
• c. Control- No pepper repellent
• d. Three constants- same type of pumpkins, same
  time of year, same amount of water given to
  pumpkins (answers can vary as long as it appears
  in both independent variable experiment and
  control experiment)

5
Mr. Delgado has noticed that scores on state
tests have decreased. He wonders if some of the
problem comes from answers not being read
correctly because of messy handwriting. He
hypothesizes that kids that use computers to
record their answers will score 10 higher grade
compared to kids using regular pen and paper. He
decides to test out his prediction.
Identify Independent variable- Dependent
variable- Control- Three constants-
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Independent variable- Using computer to take
test Dependent variable- Scores on
tests Control- Paper and pen to take test Three
constants- Same difficulty of state tests, Same
amount of questions, same IQ range for students
(answers can vary as long as it appears in both
independent variable experiment and control
experiment)