"MATHAMA-TREE-CIANS"

Tree Height Data Sheet

adapted from http://wiscinfo.doit.wisc.edu/arboretum/woodland/tree_height.htm

Rough Estimate

1. Work in groups of two. Measure the height of one person and record.

height of person __________cm

2. That person then stands straight against the tree. The second person stands at a distance and estimates how many "heights" of that person make up the tree height. Walk farther back and repeat. Do at least 4 trials or until you are getting a consistent estimate.

number of "heights" of person make up the tree

_______ + _______ + ______ + _______ = ________

Trial 1 Trial 2 Trial 3 Trial 4

divide by 4

3. average of trials __________

4. tree height = height of person X number of "heights" (use average)

5. height of tree_______

Photo Method

1. Again measure the height of a person (_________cm) and then have that person stands with back against the tree.

2. The second person stands back far enough to capture an image of the entire tree.

3. Back in the classroom, load the image on a computer and use a ruler to measure and record the height of person's image (__________cm) and the height of the tree's image (_________cm).

4. Divide the person's real height by the person's image height. Multiply the tree height by the resulting number to get the tree's real height. ________cm