Student activity
& Level of Performance
+ appropriate
student performance
- inappropriate
student performance
n.a.
not appropriate or not observed
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Tree
Circumference |
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Stand
on level ground with object being measured |
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Choose
5 trees of dominant species that reach the canopy (choose tallest,
shortest & midrange) |
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Measure
& record circumference (cm) for each tree at height of 1.35m;
record |
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Repeat
measurements for other tree species if < 5 trees of dominant species |
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Tree
Height |
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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
object through clinometer straw; move away from base of tree until
clinometer reads 30° - 60° |
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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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Record
height for 5 trees of dominant species; average |
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Record
height for 5 trees of co-dominant species, if present; average
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Include
other tree species if < 5 trees of dominant or co-dominant species |
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