September Image
Best wishes for a terrific winter
break from the kids at Frost!
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|
DATE |
SUNRISE |
SUNSET |
LOD |
SUN ANGLE AT LOCAL
SOLAR NOON |
TEMP. (F) |
COMMENTS |
|
9/21 |
5:57 a.m. EDT |
6:08 p.m. EDT |
12h 11m |
55.2 |
68 |
Weather: Sunny, scattered clouds
Time
measured: 1:10 pm EDT
Each
pair of students took a measurement, with one holding the
stick and the other reading the protractor, positioned on
the ground at the base of the stick. Most of the teams
reversed roles and remeasured, and took an average of the
two results. One student went to the library to check the
weather station. We then collected data as a class, and
calculated the average of those 11 results.
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|
10/26 |
6:29 a.m. EDT |
5:18 p.m. EDT |
10h 49m |
39.8 |
48 (9 C) |
Time
measured: 1:15 pm EDT
Weather: Sunny, scattered clouds
Each
pair of students took a measurement, with one holding the stick
and the other reading the protractor, positioned on the ground
at the base of the stick. Most of the teams reversed roles and
remeasured, and took an average of the two results. One student
went to the library to check the weather station. We then
collected data as a class, and calculated the average of those 9
results. |
|
11/27 |
7:02 a.m. |
4:53 p.m. |
9h 51m |
32.2 |
57 (14 C) |
Measurements taken: 12
Weather: Hazy to overcast - we went out and waited for brief
bursts of weak sunshine.
Each
pair of students took a measurement, with one holding the stick
and the other reading the protractor, positioned on the ground
at the base of the stick. Then the students reversed roles and
remeasured, and took an average of the two results. One student
went to the library to check the weather station. We then
collected data as a class, and calculated the average of each
team's results. |
|
12/19 |
7:20 a.m., |
4:54 p.m. |
9h 34m |
27.2 |
62 (16.7 C) |
Time
measured: 1:25 pm EST
Measurements taken: 11
Average of measurements: 27.2°
Median:
29°
Mode:
30°
Range:
20° - 32° (12°)
Temperature: 16.7°
C
Weather: sunny.
Each
pair of students took a measurement, with one holding the
stick and the other reading the protractor, positioned on
the ground at the base of the stick. Then the students
reversed roles and remeasured, and took an average of the
two results. One student went to the library to check the
weather station. We then collected data as a class, and
calculated the average, the median, and the mode of all of
the teams' results.
Best
wishes for a terrific winter break from the kids at Frost!
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|
1/19 |
7:22 a.m. |
5:19 p.m. |
9h 57m |
32.4 |
44 |
Each
pair of students took a measurement, with one holding the
stick and the other reading the protractor, positioned on
the ground at the base of the stick. In the past, students
have reversed positions and averaged their two results
together, but most did not do that this time around. One
student went to the library to check the weather station. We
then collected data as a class, and calculated the average,
the median, and the mode of all of the teams' results.
Location: Frost Middle School, Fairfax, VA
Time measured: 12:55 pm EST
Measurements taken: 12
Average of measurements: 32.4°
Median: 31.3°
Mode: 30°
Range: 30° - 38°
(8°)
Temperature: 6.66° C
Weather: sunny, breezy.
We've
been predicting the next month's measurement for the past
few months. In November they estimated December's reading as
a straight-line extrapolation from the earlier three months.
In January they estimated February's reading, with about
half the class judging it to reflect October's reading and
the other half all over the map. It's been fun.
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|
2/23 |
6:50 a.m. |
5:57 p.m. |
11h 07 m |
45.5 |
35 |
Location: Frost Middle School, Fairfax, VA
Date
measured: Friday 2/23/06
Time
measured: 12:35 pm EST
Measurements taken: 10
Average of measurements: 45.5°
Median: 45°
Mode: 45°
Range: 39.5° -
55° (15.5°)
Temperature: 1.67° C
Weather: sunny.
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|
3/22 |
6:11 a.m. |
6:23 p.m. |
|
56.4 |
68 F (20 C) |
Location: Frost Middle School, Fairfax, VA
Date measured: Thursday 3/22/06
Time measured: 12:45 pm EDT
Measurements taken: 9
Average of measurements: 56.4°
Median: 58°
Mode: 58°
Range: 45° - 65° (20°)
Temperature: 20° C
Weather: sunny.
What a difference from the conditions of the last reading!
Too bad we were rushed today, it would have been nice to
stay out a few minutes longer. The routine of taking the
measurements has gotten sloppy, which will give us material
for a good conversation about different types of errors, the
rationale for repeated trials, and precision in reading
scales.
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