Skip to main content

Tree Growth Around a Birdhouse Hook

This tree has grown around the hook on the birdhouse chain. The branch it was originally hung on broke off in a storm, but the hook remained inside the trunk of the tree.

Location
Pleasantville, Iowa

Possible Guiding, Compelling and/or Anchoring Questions

  • How did the hook on the birdhouse chain get inside the trunk?
  • If the branch it was hanging on broke off in a storm, why didn’t the birdhouse fall down, too?

Classroom Suggestions

  • Lead students to understand that trees grow despite anything that might be obstructing them.  The trunk of a tree gets larger and larger as it grows with each passing year, and this tree was changed by a birdhouse that was hung on a branch and a storm that broke the branch on which it was originally hung.

Related Resources

  • All About Trees: Provides information and guidance about planting trees and how they will grow around solid objects if they’re planted too close to them.
  • The New Yorker: Article explains how a tree’s growth can be measured with new technology called a dendrometer.

Iowa Core Alignment

Discipline
Life Science
Grade
3
Disciplinary Core Idea
LS3: Heredity: Inheritance and Variation of Traits

Credit Info

Submitted by Miika Busick

Collaborate

Have you used this resource in your classroom? Do you have ideas for improvement? Share your ideas, experiences and feedback about this phenomena.


REAPCorporation for Public BroadcastingAlliant Energy