### PENNY LAB

```Cover
Pg 4 =
Data,
Observations &
Sketches
Pg 2 =
Problem
Statement,
Research,
Hypothesis
Pg 5 =
Analysis
(Graphs &
Inferences)
Pg 3 =
Procedure
Pg 6 & 7 = Conclusion
“RERUN”
Pg 8 = Back
Cover, “extra
space”
Slide 1 of 1
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Slide 2 of 2
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Slide 1 of 3
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Slide 3 of 3
* at least 2!
Slide 1 of 1
Pg 1 / Cover
Slide 1 of 1
Pg 2
Slide 1 of 2
(= variable you are testing)
(= variable you measure)
Pg 2
Slide 2 of 2
From 1793 – 1837, the penny was pure copper. For the next 20
years, the penny was bronze, which is copper, tin and zinc. From
1857 – 1863 the cent looked whitish because it was made of copper
with 12% nickel. For the next 98 years (1864-1962!) the penny was
again bronze, except for 1943. Because of the need for copper
during WW II, the cent was zinc-coated steel in 1943. In 1962 the
tin was removed from pennies, making them 95% copper and 5%
zinc. In 1982 this was changed to 97.5% zinc and 2.5% copper
Citation: The Composition of the Cent; usmint.gov
Pg 3
Slide 1 of 2
Safety
Set-up Sketch:
= How the equipment was used
-- wear goggles
Operational Definition
= how the dependent/responding variable is
measured
number of drops will be one less than overflow
Clean up = what
needs to be done at the
end of the lab
• Wipe down table
equipment to back
counter
Pg 3
Slide 2 of 2
Pg 4
Slide 1 of 1
= includes data tables, observations & sketches
My Group’s Data
Number of Drops – Raw Data
Trial 1 Trial 2 Trial 3
1943 Penny
43
45
46
1963 Penny
22
23
27
1984 Penny
33
37
38
Observations:
I didn’t think water would pile up
and make such a big mound on a
penny!
The 3 pennies really looked different
from each other
Collaboration Data
Number of Drops -- Averages
My Grp Grp 1
1943 Penny
44.7 46.5
1963 Penny
24
28.2
1984 Penny
36
33.4
1943
Grp 2 Grp 3
40.2 44.2
26.3 26.8
34.2
35
1963
1984
(OK, so I “cheated” b/c this is
PowerPoint and I used
)
Collaboration Graph (drops)
Pg 5
Slide 1 of 1
= graphs & inferences
My Group’s Graph (drops)
50
45
40
35
30
25
Inferences:
20
15
10
5
0
1943 Penny
1963 Penny
1984 Penny
Number of Drops – Raw Data Trial 1
Number of Drops – Raw Data Trial 2
Number of Drops – Raw Data Trial 3
Both graphs show that the 1943 penny held the
most drops, the 1984 held the second highest
number of drops and the 1963 penny held the
least amount of drops.
It can be inferred that the 1943 penny holds
more water than the 1963 or 1984 pennies.
Pgs 6 & 7
Slide 1 of 4
(Notice how I included the variables and op defn in my sentences) 
(You will use 2 pages for the conclusion; I will need 4 slides!) 
Pgs 6 & 7
Slide 2 of 4
Pgs 6 & 7
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Pgs 6 & 7
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Pg 8
Slide 1 of 1
```