Overview: Students read short excerpts of original statements on evolution from Jean Lamarck, Charles Darwin, and Alfred Russel Wallace to gain historical perspective and an understanding of the nature of science. Author/Source: National Academy of Sciences Grade level: 9-12 Time: Three class periods. Concepts: A hallmark of science is exposing ideas to testing. Science focuses on natural phenomena and processes. Scientific knowledge is open to question and revision as we come up with new ideas and discover new evidence. Accepted scientific theories are not tenuous; they must survive rigorous testing and be supported by multiple lines of evidence to be accepted. Science is a human endeavor. Our understanding of life through time is based upon multiple lines of evidence. Teacher background: Evidence for Evolution Nature of Science

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