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Conceptest: Oldest Rocks
This Starting Point webpage describes a ConcepTest question that asks students to carefully examine the relative positions of lettered arrows on timeline and estimate the geologic ages represented by each arrow. Students must identify which letter corresponds most closely to the age of the oldest known rock on Earth. The website includes the question, typical student responses before and after discussion, references and topics covered by the question.
Intended for grade levels:
  • College (13-14)
  • Graduate / Professional
Type of resource:
  • For the classroom:
    • Assessment / Evaluation
    • Guide for instructor
Subject:
  • Geological Sciences:
    • Geologic time
    • Geology
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
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DLESE Catalog ID: SERC-STARTINGPOINT-000-000-000-330
Resource contact / Creator / Publisher:
Author: Dr David A. McConnell
University of Akron, Department of Geology

Author: Dr David N. Steer
University of Akron, Department of Geology

Author: Univeristy of Akron ConcepTest Development Team
http://www.uakron.edu/colleges/artsci/depts/geology/index.php