This lesson explores why urban forests need management, introducing the challenges urban trees face such as soil compaction, limited space, pollution, poor soil, construction damage, invasive species, pests, disease, and storms.
Students play a movement-based Tree's Life game in which cards representing helpful and harmful events move them forward or back, then discuss how urban and rural forest management differ.
An optional measurement activity has students use tree identification keys and diameter tapes to identify species and measure tree diameter and twig length, then graph their data to reason about forest health and diversity.
Printed Tree's Life cards (one per group of 4-5 students)
Urban Tree Key (one per group)
Diameter at breast height (DBH) tapes (one per group)
Rulers (one per group)
Printouts of activity resources
Classroom Implementation:
Use this lesson on its own or as a sequence with the rest of the urban guide unit (Lesson 1, Lesson 2, and Lesson 4).
This lesson runs about 55 to 85 minutes and can be done fully indoors, although the Tree's Life game can be played outdoors instead.
If DBH tapes are unavailable, use typical measure tapes and collect data about circumferences instead.
The graphing task is a natural place to discuss species and age diversity as indicators of forest resilience, using the emerald ash borer as a concrete example.
Differentiation:
Even though this resource was designed for Wisconsin audiences, it can be used in any classroom with minimal changes.
Follow age-based recommendations provided by the lesson authors to target the lesson to your students' grade level.
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