• [History of life: Grades 9-12] Rates of evolution vary.
• [History of life: Grades 13-16] Rates of evolution vary.
• [Mechanisms of evolution: Grades 9-12] Evolution results from selection acting upon genetic variation within a population. (LS4.B)
• [Mechanisms of evolution: Grades 13-16] Evolution results from natural selection acting upon genetic variation within a population.
• [Nature of science: Grades 9-12] A hallmark of science is exposing ideas to testing. (P3, P4, P6, P7)
• [Nature of science: Grades 9-12] Scientists can test ideas about events and processes long past, very distant, and not directly observable.
• [Nature of science: Grades 13-16] A hallmark of science is exposing ideas to testing.
• [Nature of science: Grades 13-16] Scientists can test ideas about events and processes long past, very distant, and not directly observable.
• [Studying evolution: Grades 9-12] Evolutionary trees (i.e. phylogenies or cladograms) portray hypotheses about evolutionary relationships.

• Disciplinary Core Idea LS4.B: Natural Selection
• Science and Engineering Practice 3. Planning and carrying out investigations
• Science and Engineering Practice 4. Analyzing and interpreting data
• Science and Engineering Practice 6. Constructing explanations and designing solutions
• Science and Engineering Practice 7. Engaging in argument from evidence

This article includes a set of discussion and extension questions for use in class. It also includes hints about related lessons that might be used in conjunction with this one. Get more tips for using Evo in the News articles in your classroom.

Additional teaching tips for 13-16:
Use this resource to relate evolutionary concepts to the topic of ecosystems (or get more suggestions for incorporating evolution throughout your biology syllabus).

• Genetic Variation