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Analysis of students' claims on the Frog problem
| Scorea | No. of students | % | Claim components |
||
|---|---|---|---|---|---|
| Atrazine only | Trematodes only | Atrazine plus trematodes | |||
| 3 | 51 | 29 | ✓ | ✓ | ✓ |
| 2 | 56 | 20 | ✓ | ✓ | |
| 9 | ✓ | ✓ | |||
| 3 | ✓ | ✓ | |||
| 1 | 53 | 23 | ✓ | ||
| 5 | ✓ | ||||
| 3 | ✓ | ||||
| 0 | 15 | 9 | |||
a A score of 3 indicates that a claim was complete and correct. Claims that received a score of 2 or 1 were missing either one or two fundamental components. Check marks indicate what components were present in students' claims.
