Lesson: evolution: Natural Selection of Stick-Worms - 3 views
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Cheska Lorena on 18 Oct 14Students play the role of birds, go out on the school lawn, and pick up toothpick "stick worms" which have been previously scattered on the lawn in equal numbers of green-stained and unstained. "Birds" are chased away before the "worm population" drops too low. Back in the classroom, the number of green and non-green "worms" are compared individually and for the whole class. Discussion relates the experience to the elements of natural selection. As presented here, it does not lend itself to demonstrating the effects of selection over multiple generations.
