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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