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A Formative Assessment of Geologic Time for High School Earth Science Students
Earth science courses typically include the concept of geological time. The authors of this study attempt to move past traditional assessment practices and develop a formative assessment of students' understanding of the construction of the geologic time scale and how it is interpreted. Through this approach students are challenged to conceptualize the geologic time scale by comparing it to a student-produced time scale for an older adult's life. This formative assessment allows the teacher to alter instruction based on students' feedback in order to maximize student understanding of geologic time.
Intended for grade levels:
  • Graduate / Professional
Type of resource:
  • Text:
    • Journal article
  • Educational theory and practice
  • Geological Sciences:
    • Geologic time
Technical requirements:
Adobe Acrobat reader
Cost / Copyright:
No cost
We encourage the reuse and dissemination of the material on this site for educational, noncommercial purposes as long as attribution is retained.
DLESE Catalog ID: EVAL-TLKT-000-000-000-137
Related resources:
This resource is referenced by
Resource contact / Creator / Publisher:
Publisher: National Association of Geoscience Teachers (NAGT)
Journal of Geoscience Education (JGE)

Contributor: Ron Hermann
Morgan State University

Contributor: Bradford Lewis
Morgan State University