Signs of Change: Studying Tree Rings
http://lasp.colorado.edu/home/wp-content/uploads/2011/08/Signs-of-Change-Studying-Tree-Rings.pdf

Nancy Colberg, Northern Climate Change

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In this hands-on activity, students will learn about dendrochronology (the study of tree rings to understand ecological conditions in the recent past) and come up with conclusions as to what possible climatic conditions might affect tree growth in their region. Students determine the average age of the trees in their schoolyard, investigate any years of poor growth, and draw conclusions about the reasons for those years.

Subject: Environmental Science:Global Change and Climate
Resource Type: Activities
Grade Level: Middle (6-8), High School (9-12)
Theme: Teach the Earth:Course Topics:Environmental Science, Teach the Earth:Incorporating Societal Issues:Climate Change, Teach the Earth:Enhancing your Teaching:NGSS