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Understanding Earth's Changes Over Time
This activity has students compare the magnitude of geologic time with spans of time in a person's lifetime, which is often difficult for many students. They use a long paper strip and a reasonable scale to represent visually all of geologic time, including significant events in the development of life on earth as well as recent human events. This activity provides students with an opportunity to develop understandings of the age of the earth compared to the various events in the history of earth systems. The site contains a list of materials and all of the information required to conduct this activity.
Intended for grade levels:
  • Middle (6-8)
  • High (9-12)
Type of resource:
  • For the classroom:
    • Classroom activity
    • Guide for instructor
Subject:
  • Geological Sciences:
    • Geologic time
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
Copyright 1998 National Academy of Sciences. All right reserved.
DLESE Catalog ID: DLESE-000-000-005-639
Educational standards:
  • National Science Education Standards (NSES):
    • 5-8:
      • Unifying concepts and processes:
        • Change, constancy, and measurement
        • Evidence, models, and explanation
      • A - Science as inquiry:
        • Abilities necessary to do scientific inquiry
      • D - Earth and space science:
        • Earth's history
    • 9-12:
      • Unifying concepts and processes:
        • Change, constancy, and measurement
        • Evidence, models, and explanation
      • A - Science as inquiry:
        • Abilities necessary to do scientific inquiry
      • D - Earth and space science:
        • Origin and evolution of the earth system
Resource contact / Creator / Publisher:
Publisher: National Academy of Sciences