Divergent Evolution (Grades 1-4)
Gain insight into the animal reproduction process known as divergent evolution, in which two related species become more and more dissimilar, with specialized features and characteristics.
How Evolution Works (Grades 6-8)
In this lesson, students learn about natural selection, the mechanism that drives evolution. They begin by viewing short videos about the evolution of physical and behavioral adaptations in various organisms.
How New Species Evolve (Grades 9-12)
In this two-part lesson, students learn about both allopatric and sympatric speciation. First, students study allopatric speciation by visiting the Web feature Allopatric Speciation. In the second part of the lesson, students learn about sympatric speciation by studying hummingbirds and lacewing flies.
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