Table 3 Examples of variables measuring the competence of ‘solving the problem (PS)’
From: Developing a computer-based assessment of complex problem solving in Chemistry
Variable | Description | Coding |
|---|---|---|
PS01a | Choosing three correct substances in order to synthesize the required substance | 0, 1, 2, 3 |
PS01b | Choosing the correct system settings of concentration and distillation in order to maximize the reaction yield | 0, 1, 2 |
PS02a | Replicating analyses only once | 0, 1 |
PS02b | Replicating syntheses only once | 0, 1 |
PS03 | Applying optimization steps of the reaction yield for meaningful reactions only | 0, 1 |
PS04 | Synthesizing substances with previously identified and analyzed precursors only | 0, 1 |