Using EvidenceCentered Design to develop Scenario Based Interactive

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

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

Design Pattern Attributes § 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.

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

Experimental Investigation: FKSA 4 Focal KSA 4: Ability to identify, generate, or evaluate a prediction/hypothesis that is testable with a simple experiment AKSA 5: Content knowledge CF 3: Presentation of a situation requiring the design or conduct of a controlled experiment.

Experimental Investigation: FKSA 5 Focal KSA 5: Ability to plan and conduct a simple experiment step-by-step given a prediction or hypothesis VF 6: Number of variables investigated CF 3: Presentation of a situation requiring the design or conduct of a controlled experiment.

Experimental Investigation: FKSA 7 Focal KSA 7: Ability to identify variables of the scientific situation that should be controlled VF 2: Which one of the phases of experimental investigation is addressed. CF 3: Presentation of a situation requiring the design or conduct of a controlled experiment.

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. VF 9: Data representation VF 10: Degree of scaffolding CF 3: Presentation of results from a controlled experiment.

Task Complete