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It's All in Your Head: An Investigation of Human Ancestry (Grades 9-12)
Author/Source: ENSI (via Understanding Evolution)
- All organisms, including humans, retain evidence of their evolutionary history.
- The fossil record contains transitional forms.
- Anatomical similarities of living things reflect common ancestry.
- Scientists pose, test, and revise multiple hypotheses to explain what they observe.
- Scientific ideas are developed through reasoning.
- Scientists use the similarity of DNA nucleotide sequences to infer the relatedness of taxa.
- Scientists use fossils (including sequences of fossils showing gradual change over time) to learn about past life.
Grade Level: 9-12
Time: One to two class periods
Teaching Tips: Casts of skulls are necessary; however, the lesson also provides a collection of hominoid photos to accomodate a greater number of measurements. The author provides an excellent list of discussion questions.