Evaluation - Special Cases:
- This rubric addresses the ability to evaluate models, equations, solutions, and claims (Special Cases).
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Competent | Developing | Novice | What? |
|---|---|---|---|---|---|
| SC 1 | Is able to identify an optimally relevant special-case for analysis | A optimally relevant special case is identified and clearly stated |
A relevant special case is identified, but it is not an optimal special case (i.e., there are other special cases which give a stronger, more clear-cut analysis of the solution) |
An attempt is made, but the identified special case is either irrelevant or ill-defined |
No attempt is made to identify a relevant special case |
| SC 2 | Is able to state and justify a conceptual expectation for the special case | A conceptual expectation is stated, fully justified, and the expectation is consistent with its justification |
A conceptual expectation is stated, but its justification is either missing minor steps, or is inconsistent with the expectation |
A conceptual expectation is stated, but its justification is either absent or missing major steps | No attempt is made to state or justify a conceptual expectation |
| SC 3 | Is able to use a given solution (or a solution they made up) to predict what would happen for the special case | A prediction is stated and clearly derived from the given solution |
A predication is stated, but its derivation from the given solution is either missing minor steps, or is inconsistent with the derivation |
A prediction is stated, but its derivation from the given solution is either absent or missing major steps | No attempt is made to state or explain what the given solution predicts for the special case |
| SC 4 | Is able to make, and justify, a reasonable conclusion regarding their conceptual expectation and the solution. | A conclusion is stated and justified, and is consistent with the results of the student’s analysis |
A conclusion is stated and justified, but it is inconsistent with the results of the student’s analysis, or it is incomplete |
A conclusion is stated, but its justification is either absent, missing major steps, or containing major mistakes | No attempt is made to state or justify a conclusion |
This rubric was originally developed by Eugenia Etkina and the rest of the ISLE team at Rutgers University. It is shared here with permission and any modifications in language or focus are entirely my responsibility. My enduring thanks to Eugenia for her dedication to PER and generosity with those of us who admire and follow her work.
