Fig. 2From: Teaching natural selection in early elementary classrooms: can a storybook intervention reduce teleological misunderstandings?Participants’ performance on pretest and posttest generalization assessments. Because of rounding, percentages do not always add up to 100. Level 1 = no isolated facts; Level 2 = isolated facts but no natural selection understanding; Level 3 = foundation for natural selection understanding; Level 4 = natural selection understanding in one generation; Level 5 = natural selection understanding for multiple generationsBack to article page