Curated OER
A Close Encounter of the Tree Kind
Learners study trees in their natural habitat. For this tree lesson, students complete a number of outdoor activities to estimate the height of a tree, examine how bark can be a distinguishing tree characteristic, and how to make a bark...
Curated OER
How Big Is A Tree?
Students estimate the height of trees on the school campus, and measure their circumferences. They develop a map of trees on the school site, conduct their measurements, and record the results on a data table.
Natural History Museum
Natural History Museum: Trees, Magnificent Structures
This thorough seminar discusses the advantages of being a tree, how trees lift water, how trees stand up, and the height of trees.
Other
Elms Environmental Education Center: How to Use a Clinometer
Offers instructions in how to use a clinometer, an instrument used by foresters for measuring angles in order to determine the height of a tree. The mathematics behind a clinometer is also explained.
Other
Redwood National Park
This site has interesting facts and figures associated with the Redwood Tree. Numerous images of towering redwoods and scenic overlooks are posted here. Links to other interesting park features are also available.