Table 5.
Average pre/post scores for key misconceptions questions among local students comparing EvoBeaker's ″Flowers and Trees″ lab and Clade-Race+Lecture groupsa,b
| Misconception | Group | Average pretestscores (SD) | Average posttestscores (SD) | Delta (% ±) |
|---|---|---|---|---|
| M1: Incorrect Mapping of Time | EvoBeaker's ″Flowers and Trees″ lab (n = 27) | 0.226 (0.236) | 0.056 (0.115) | -0.170 (-75%) |
| Clade-Race+Lecture (n = 22) | 0.123 (0.169) | 0.055 (0.15) | -0.068 (-56%) | |
| M2: Tip Proximity Indicates Relationship | EvoBeaker's ″Flowers and Trees″ lab (n = 27) | 0.130 (0.263) | 0.093 (0.242) | -0.037 (-29%) |
| Clade-Race+Lecture (n = 22) | 0.091 (0.197) | 0 (0) | -0.091 (-100%) | |
| M3: Node Counting | EvoBeaker's ″Flowers and Trees″ lab (n = 27) | 0.420 (0.286) | 0.259 (0.267) | -0.160 (-38%) |
| Clade-Race+Lecture (n = 22) | 0.424 (0.234) | 0.348 (0.281) | -0.076 (-18%) | |
| M4: Straight Line Equals No Change | EvoBeaker's ″Flowers and Trees″ lab (n = 27) | 0.365 (0.199) | 0.291 (0.204) | -0.074 (-20%) |
| Clade-Race+Lecture (n = 22) | 0.357 (0.175) | 0.273 (0.192) | -0.084 (-24%) |
aScores have been scaled between 0 and 1 to facilitate comparisons. Note that a lower score indicates a smaller measure of that misconception.
bThere were no statistically significant differences between EvoBeaker's ″Flowers and Trees″ lab and Clade-Race+Lecture groups at the p < .05 level when corrected for multiple comparisons.