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Overview:
Students construct an evolutionary tree of imaginary animals (Caminalcules) to illustrate how modern classification schemes attempt to reflect evolutionary history.Author/Source:
Gendron, Robert Grade level:
9-12 Time:
Two class periods Concepts:
Correspondence to the Next Generation Science Standards is indicated in parentheses after each relevant concept. See our conceptual framework for details. - Biological evolution accounts for diversity over long periods of time. (LS4.A, LS4.D)
- Present-day species evolved from earlier species; the relatedness of organisms is the result of common ancestry. (LS4.A)
- During the course of evolution, only a small percentage of species have survived until today.
- An organism's features reflect its evolutionary history.
- The fossil record documents the biodiversity of the past.
- The fossil record contains organisms with transitional features.
- The fossil record documents patterns of extinction and the appearance of new forms.
- Anatomical similarities of living things reflect common ancestry. (LS4.A)
- Natural selection acts on the variation that exists in a population. (LS4.B, LS4.C)
- Classification is based on evolutionary relationships.
- Evolutionary trees (i.e., phylogenies or cladograms) are built from multiple lines of evidence.
Teacher background: |
