Description:
In this activity straws are used to simulate tree-ring core samples. Using marked straws to simulate tree-ring core samples, students work in groups to reconstruct a 50 year climatic history. Students record this chronology on a 3 meter time line designed to highlight significant social, personal, and scientific events covering the same period. Background information for teachers relates the activity to four themes: time, change, cycles, and the Earth as home. A teacher reading list is provided. Part of a packet of lesson plans on global change produced by the US Geological Survey.

Organization:
U.S. Geological Survey (USGS)

URL:
http://interactive2.usgs.gov/learningweb/teachers/globalchange_time.htm

Contact:
Learning Web Team
E-mail: learning_web@usgs.gov

Earth Science Questions
E-mail: ask@usgs.gov
http://www.usgs.gov/

Cost:
Free over the Internet

Education Level:
Grades 5-8

Subject:
Climate
Global Environmental Change

Resource Type:
Internet Site
Curriculum/Instructional Materials
 
 

Date Added to teachearth.com:
5/1/00