RERUN
The RERUN method is for writing organized and complete conclusions to
summarize the results from a scientific experiment or investigation. RERUN is an
acronym for five types of information that a conclusion should include:
R = Recall/Restate: Identify the problem/purpose of the
experiment/investigation. What is the focus of the experiment?
Example:
 The purpose of the experiment was to see how drop height affects
bounce height.
E = EXPLAIN: Restate and explain your hypothesis. What were you trying to
find out? Briefly explain the procedure that you followed.
Examples:
 The hypothesis stated that as drop height increases then bounce
height increases. A bouncy ball was dropped from five different
heights. The first drop height was 50 cm and each drop height was
increased by 50 cm. The final drop height was 2.5 meters.
R = Results: State the results of the experiment/investigation. State whether
your hypothesis was supported by the data.
Example:
 The hypothesis that drop height affects bounce height was supported
by the collected data. The graph shows that with each increasing
drop height the bounce height increased.
U = Uncertainty: Describe any uncertainties that exist, if any. What errors
happened that you could not control (such as weather or equipment issues)? What
were some uncontrolled variables that may have affected the results? Explain any
errors that you came across during the experiment/investigation that could be
fixed for the next time it is conducted.
Example:
 I am uncertain if there other variables that affect bounce height.
How does ball type affect bounce height?
 A possible error in the experiment was that the surface type was not
a controlled variable.
N = New: Write at least two new things you learned or discovered or had
questions about from the experiment. INCLUDE the appropriate SCIENTIFIC
VOCABULARY in your explanation. Describe how you could take this experiment
further.
Example:
 Based on the data collected I learned that drop height does directly
affect bounce height.
 This investigation could further test how ball size affects bounce
height.
Write in complete sentences and use proper spelling and punctuation. Avoid writing
in first or second person (don’t say me, you, I, we) whenever possible. For example,
do not begin your hypothesis with, “My hypothesis was wrong.” Instead, state,
“The hypothesis was not supported by the data.”
RERUN modified from:
http://teacherweb.com/CA/SuzanneMiddleSchool/Warren/Conclusion-RERUN-format.pdf