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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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| 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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