1. Using Evidence-Centered Design to develop Scenario Based Interactive Computer Tasks Daisy Rutstein

2. Evidence-Centered Design Layered approach to assessment design Specifies details related to the: – Student Model – Evidence Model – Task Model Document, document, document Design Patterns and Task Templates

3.  Focal Knowledge, Skills & Attributes (KSAs)  The primary KSAs targeted by the design pattern. What we want to make inferences about.  Additional KSAs  Other KSAs that may be required for successful performance on the assessment tasks.  Potential Observations & Potential Work Products  What students say, do, or make that constitutes the evidence  Characteristic Features and Variable Features  Aspects of assessment situations that are likely to evoke the desired evidence, or that could be varied across tasks. Design Pattern Attributes

4. Interactive Computer Science Tasks Pinball - Physical Science Domain - Potential and Kinetic energy Marigold - Life Science Domain - Plant growth Design Pattern Experimental Investigation Task Template Experimental Investigation within the Sciences

5. Experimental Investigation: FKSA 4 Focal KSA 4: Ability to identify, generate, or evaluate a prediction/hypothesis that is testable with a simple experiment CF3: Presentation of a situation requiring the design or conduct of a controlled experiment. AKSA5: Content knowledge

6. Experimental Investigation: FKSA 5 Focal KSA 5: Ability to plan and conduct a simple experiment step-by-step given a prediction or hypothesis CF3: Presentation of a situation requiring the design or conduct of a controlled experiment. VF6: Number of variables investigated

7. Experimental Investigation: FKSA 7 Focal KSA 7: Ability to identify variables of the scientific situation that should be controlled CF3: Presentation of a situation requiring the design or conduct of a controlled experiment. VF2: Which one of the phases of experimental investigation is addressed.

8. Experimental Investigation: FKSA 11 Focal KSA 11: Ability to interpret or appropriately generalize the results of a simple experiment or to formulate conclusions or create models from the results. CF3: Presentation of results from a controlled experiment. VF9: Data representationVF10: Degree of scaffolding

9. Task Complete