From: The Sandwich principle: assessing the didactic effect in lectures on “cleft lips and palates”
Difficulty level | Sandwich lecture Number of questions | Classical lecture Number of questions | |
---|---|---|---|
Easy | > 0.8–1 | 12 | 7 |
Upper test optimum | 0.8–0.6 | 10 | 5 |
Lower test optimum | 0.5–0.4 | 8 | 12 |
Difficult | < 0.4 | 10 | 16 |