Fig. 4
From: Iterative design of a simulation-based module for teaching evolution by natural selection

Change in # of key concepts used in response to ACORNS question from pre to post-test in study 1. 40% showed no change (dark gray bars); 48% showed an increase in key concepts used (light gray bars). This only includes the 3 key concepts scored by EvoGrader that are part of our target key concepts (Variation, Heritability, and Differential Survival)