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GLOBE
Assessment
Grade K-4
Literacy
Activity for Protocol Test
Write
4 sentences that make the reader “see” the tree
canopy at your study site in each of the seasons.
Densiometer
Protocol Test
The Air
Temperature protocol test assesses students' ability to construct
and use a densiometer.
Download
a Word  or
pdf 
copy.
Construction
& Use of Densiometer Protocol Test
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Student
activity & Level of Performance
+
appropriate student performance
-
inappropriate student performance
n.a.
not appropriate or not observed
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| Collect:
Tube
- 4 cm diameter 7 cm long
34
cm thread/floss
metal
nut/washer
tape
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| Construct
Densiometer |
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| Use
string & tape to form crosshair on end of tube |
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| Leave
some string hanging at bottom; use to tighten if strings
loosen |
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| Attach
both ends of 18 cm string with metal nut/washer across
other open end of tube |
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| Hold
vertically with metal nut/washer directly below the intersection
of the crosshairs |
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| Use
the Densiometer |
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| Look
directly up at canopy; record vegetation that touches
the crosshairs (+, -, Sky) |
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