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How do you determine the age of a tree without cutting it down? An earth science video presents two possible trees as the oldest, and viewers see they have very little in common. The first appears large and looks almost dead while the second appears to have small shoots and looks more like a forest than a tree.
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Instructional Ideas
- Debate why the two contenders for oldest tree are both in North America and what conditions on other continents might prevent trees there from having the title
- Research the Old Tjikko tree in Sweden and its age relative to the ones in the video
Classroom Considerations
- Be wary of comments, as they are open to the public
- This video is hosted on YouTube
Pros
- Includes closed captioning in English and Portuguese
- Describes clonal colonies
Cons
- None