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Significant difference between the mean pretest and posttest scores of students in each group
| Mean | Mean gain score | SD | Computed t | df | Critical t (0.05 level of confidence; two-tailed) | |
|---|---|---|---|---|---|---|
| Control group (traditional) | ||||||
| Pretest | 19.225 | 9.225 | 6.526 | 8.940 | 39 | 2.021 |
| Posttest | 28.45 | |||||
| Experimental group (educational card game) | ||||||
| Pretest | 20 | 12.675 | 5.753 | 13.934 | 39 | 2.021 |
| Posttest | 32.675 | |||||
