Iterative design of a simulation-based module for teaching evolution by natural selection

Table 4 Changes in key concepts and misconceptions as measured by the ACORNS item

	Proportion expressing on pre	Proportion expressing in post	McNemar’s χ²	p value* (df = 1)
Key concept
Variation	0.34	0.53	82.4	< 0.0001
Heritability	0.13	0.35	127.2	< 0.0001
Differential fitness	0.42	0.62	97.7	< 0.0001
Misconception
Need to change	0.25	0.20	9.4	< 0.01
Individuals evolve	0.10	0.05	16.4	< 0.0001

*Correcting for multiple comparisons, critical value is 0.01. At this level, all comparisons are significant

ISSN: 1936-6434