Science 7
Review From Last Class
 Do you have…?
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Senses Lab Sheet
Data table (On Graph Paper)
Analysis Questions Completed
Calculating Average
 For each trial you are required to calculate average
or mean of your trials
 Mean= T1+T2+T3+T4+T5
5
 If you had a “dropped” ruler you add it as 30cm
Extension: Calculate reaction time in milliseconds
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t=
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2d
g
X 1000
Where:
t = Reaction time (milliseconds)
d = Distance ruler dropped (cm)
g = Acceleration due to gravity (980 cm/sec2)
X 1000
= To convert the time from seconds to milliseconds.
Graphing and Reporting
Bar Graph
Average Reaction Time of 3 Senses
30
Sight
Touch
Sound
cm Drop Average
25
20
15
10
5
0
Sight
Touch
Sound
Formal Lab Report
 You must include the following in your typed
report:
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Problem Statement (written on Wednesday)
Hypothesis (written on Wednesday- do NOT make
changes even if it’s wrong)
Materials used
Data (chart of your trial results; Bar Graph- title, x &
y axis labelled, correct independent and dependent
variables labelled)
Analysis questions (from worksheet)
Conclusion statement (next slide)
Conclusion StatementRERUN
 Restate: Restate the lab experiment. Describe the
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assignment. (include your independent, dependent and
controlled variables)
Explain: Explain the purpose of the lab. What were you
trying to figure out or discover? Talk briefly about the
procedure you followed to complete the lab.
Results: Explain your results. Confirm whether or not
your hypothesis was supported by the results. (Use
simple language such as, “The results supported the
hypothesis,” or “The results did not support the
hypothesis.”)
Uncertainties: Account for uncertainties and errors.
Explain, for example, if there were other circumstances
beyond your control that impacted the experiment
(“Controlled Variables” that weren’t controlled)
New: Discuss new questions or discoveries that emerged
from the experiment.
Computer Lab
 Before we go make sure you have:
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Rough Draft
Graph Paper
Copy of Checklist/How to Write a
Conclusion document
 Please bring everything with you, you
will be dismissed from computer lab
Finished?
 You have 2 options for submitting your
assignment:
1.
2.
Email the assignment to
danielle.carter@hrsb.ca ; hand in graphs
if created by hand
Save a copy to your memory stick and
print from home