Table 2.
Student performance on pre- and postlab surveys
| Question category | Question no. | % correct prelab (n = 183) | % correct postlab (n = 185) | Change (post–pre) | P value, multivariate hotelling T2 test | P value independent t test |
|---|---|---|---|---|---|---|
| Rubisco: the enzyme studied in the three labs | 3 | 37 | 79 | 42 | 0.000 | 0.000 |
| 5 | 28 | 57 | 29 | 0.000 | ||
| 6 | 30 | 59 | 29 | 0.000 | ||
| 8 | 44 | 85 | 41 | 0.000 | ||
| Technique 1: SDS-PAGE | 9 | 32 | 87 | 55 | 0.000 | 0.000 |
| 10a | 68 | 68 | 0 | 0.363 | ||
| 11 | 28 | 50 | 22 | 0.000 | ||
| 12 | 31 | 85 | 54 | 0.000 | ||
| Technique 2: Western blot | 13 | 30 | 88 | 58 | 0.000 | 0.000 |
| 14 | 35 | 48 | 13 | 0.002 | ||
| Application of techniques 1 and 2 | 16 | 26 | 33 | 7 | 0.032 | |
| Technique 3: tissue printing | 15 | 36 | 45 | 9 | 0.011 | |
| Application of technique 3 | 17a | 74 | 57 | −17 | 0.004 | |
| 18b | 16 | 81 | 65 | 0.000 | ||
| Concurrent lecture topics | 2c | 87 | 90 | 3 | 0.000 | 0.002 |
| 4c | 54 | 77 | 23 | 0.000 | ||
| 7c | 18 | 22 | 4 | 0.128 | ||
| Previous knowledge (control) | 1 | 94 | 90 | −4 | 0.183 |
a Questions 10 and 17 both had correct answer in the form of ″all of the above.″ See Results for details.
b Question 18 was a follow-up question that asked for student confidence on their choice of answer on question 17. Choices included ″knew the answer,″ ″reasoned,″ ″guessed,″ and ″other.″ Both ″knew the answer″ and ″reasoned″ were counted as ″correct″ answer. See Results for details.
c Question 2 was a lecture topic covered in one-third of all nine lab sections, and question 4 was a lecture topic covered in all nine lab sections; both had separate labs related to them. Question 7 was a lecture topic without a lab activity associated with it.