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GLOBE
Assessment
Grade 5-8
Math
Activity for Protocol Test
When
you use the clinometer, the string makes various angles as
you point it toward the top of trees. Draw the approximate
shape (do not use a protractor or the clinometer) of an angle
of:
30 degrees
45 degrees
60 degrees
90 degrees
NCTM
Standard: geometry 1.1
Clinometer
Protocol Test
The Clinometer
protocol test assesses students' ability to construct and
use a clinometer.
Download
a Word 
or pdf 
copy.
Construction
& Use of Clinometer 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:
clinometer
sheet
table
of tangents
cardboard
drinking
straw
metal
nut/washer
15
cm of thread/floss
glue,
scissors
hole-punch,
tape
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| Construct
Clinometer |
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| Attach
clinometer to one side and table of tangents to other
side of cardboard |
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| Punch
hole at marked circle; tie 15 cm. string (attached to
metal nut/washer) through hole |
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| Tape
straw along designated line to use as a sight |
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| Using
the Clinometer |
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| Stand
on level ground with object being measured |
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| Measure
& record height of eyes from the ground |
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| Sight
top of object through clinometer straw |
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| Partner
records – BVW (string + washer) |
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| Measure
& record distance from observer to object |
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| Calculate
& record height of object:
Tree
height = (TAN – BVW x distance to object) + eye
height
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