Table 4.
Average pre/post scores for key skills questions among local students comparing EvoBeaker's ″Flowers and Trees″ lab and Clade-Race+Lecture groupsa
| Skill | Group | Average pretest scores (SD) | Average posttest scores (SD) | Delta (% ± ) |
|---|---|---|---|---|
| S1: Reading Traits from Tree | EvoBeaker's ″Flowers and Trees″ lab (n = 27) | 0.654 (0.313) | 0.691 (0.345) | 0.037 (+6%) |
| Clade-Race+Lecture (n = 22) | 0.515 (0.321) | 0.667 (0.291) | 0.152 (+29%) | |
| S2: Deducing Ancestral Traitsb | EvoBeaker's ″Flowers and Trees″ lab (n = 27) | 0.259 (0.321) | 0.500 (0.439) | 0.241 (+93%) |
| Clade-Race+Lecture (n = 22) | 0.227 (0.255) | 0.773 (0.369) | 0.545 (+240%) | |
| S3: Reconstructing Trees | EvoBeaker's ″Flowers and Trees″ lab (n = 27) | 0.489 (0.285) | 0.626 (0.341) | 0.137 (+28%) |
| Clade-Race+Lecture | 0.427 (0.273) | 0.732 (0.301) | 0.305 (+71%) |
aScores have been scaled between 0 and 1 to facilitate comparisons. Note that a higher score indicates a higher measure of that skill.
bDenotes statistical significance at the p < .05 level when corrected for multiple comparisons between EvoBeaker's ″Flowers and Trees″ lab and Clade-Race+Lecture groups.