Hi Pat, I love the title of your plan but I couldn't open the document.

Patty, I can't open it either but I can walk upstairs and get it from you.

This post was editted by Anne Marie Levesque on Jan, 2009
I had WORD open when I downloaded your file, so I was able to read your posting.

Reminds me of when we were trying to measure the tree when we met for this program at Dartmouth, MA. We did the measurement of the person, tree, and meter stick in the same picture for measurement but we didn't use the other two methods. I wish we had so I could have a connection to what you were talking about in accuracy of the 3 methods.

Sounds like the students would enjoy this hands on approach to measurement of objects with the added competition of which group measured the most accurately. Has it been your findings that ImageJ is the most accurate?

I went to http://www.wikihows.com/measure-the-height-of-a-tree
to download the document you referenced but could not find it. Would you be able to email a copy of it?

Hi Ann Marie,
The quickest way I got the site was to go to Google, "How to measure the height of a tree" The first site was How to measure the height of a tree wikihow. The first two suggestions were the shadow method andd the pencil method.
There were others, but those seem to be the easiest
Good luck!

This post was editted by Robert Daniels on Jan, 2011
Thanks for the tip! I found the page and it is very interesting,
http://www.wikihow.com/Measure-the-Height-of-a-Tree

I also found another video which students might also enjoy.
http://www.5min.com/Video/How-to-Measure-the-Height-of-a-Tree-60484226
(Video Unavailable)

I wonder how accurate that is?