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Evolution and Patterns in Time
This lesson provides a real-sense time scale experience to better visualize the vast extent of geological time. Using familiar linear analogs, students come to realize that the five main classes of vertebrates (fishes, amphibians, reptiles, mammals and birds) each emerged several tens of millions of years apart, over the past 500 million years. Students also discover when the earliest fossils of each major vertebrate class first appeared, over several hundreds of millions of years, and gain a sense of their gradual changes over time.
Intended for grade levels:
  • Middle (6-8)
  • High (9-12)
  • College (13-14)
Type of resource:
  • For the classroom:
    • Classroom activity
    • Guide for instructor
    • Lesson plan
  • Geological Sciences:
    • Geologic time
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
Copyright 2008 ENSI (Evolution & the Nature of Science Institutes). This material may be copied only for noncommercial classroom teaching purposes, and only if this source is clearly cited.
DLESE Catalog ID: DLESE-000-000-010-312
Resource contact / Creator / Publisher:
Publisher: Evolution & the Nature of Science Institutes

Author: Larry Flammer
Evolution & the Nature of Science Institutes