Fig. 1From: Testing the effectiveness of two natural selection simulations in the context of a large-enrollment undergraduate laboratory classLearning gains from the physical and virtual simulation activities. Students completed identical natural selection assessments before the lab, after the lab, and then 1 month after their lab. Normalized change represents the fraction of possible score improvement that the student achieved. Centerlines show the medians; box limits indicate the 25th and 75th percentiles; whiskers extend to the minimum and maximum values. Means are indicated by + symbol. Students in both treatments showed an improvement from pre- to post-test and pre- to delayed post-test. There were no significant differences in normalized gain scores between the treatments for either comparisonBack to article page