Scientific MethodScientific Method
Scientific MethodScientific Method
•Steps used to gather
information and solve
problems
Scientific MethodScientific Method
1. Identify a problem or
question that could be
tested
2. Research to find out what
is already known
Scientific MethodScientific Method
3. Form a
hypothesis
Scientific MethodScientific Method
4. Test the hypothesis
(experiment)
Scientific MethodScientific Method
5. Record and study the data
6. Form a conclusion
Scientific MethodScientific Method
7. Communicate the results
Key TermsKey Terms
• Hypothesis- testable
question
• Usually an “if” “then”
statement
• Example:
Key TermsKey Terms
• Problem – to reduce the number of
students arriving late to class
• If there is a warning bell 30 sec.
before each class, then
• more students will arrive on time
Key TermsKey Terms
• Control- the group or subject
that has all normal or standard
conditions
• Control group is necessary to
compare the experimental
groups to
Key TermsKey Terms
• Variable- a condition that could be
different
• Independent Variable- the only
condition that is changed for the
experiment
• The variable that “I” change as
the experimenter
Key TermsKey Terms
• An experiment should have
only one independent
variable
• Example:
Key TermsKey Terms
• Mrs. C. wanted to test the effect
of different food coloring in food
chosen by students
• She prepared mashed potato
servings exactly the same except
for the color
Key TermsKey Terms
• The dependent variable is
the condition that might
change as a result of the
independent variable
• Example:
Key TermsKey Terms
• Mrs. C. wanted to test the effect
of different food coloring in food
chosen by students
• The dependent variable that she
could observe is which potatoes
the students chose
Key TermsKey Terms
•Constant- condition(s)
that is/are the same for
trials

Scientific Method