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Modeling and Explaining Content: Definition, Research Support, and Measurement of the ETS National Observational Teaching Examination (NOTE) Assessment Series

Stickler, Leslie M.; Sykes, Gary
Publication Year:
Report Number:
ETS Research Memorandum
Document Type:
Page Count:
Subject/Key Words:
English Language Arts (ELA) Mathematics Modeling and Explaining Content (MEC) National Observational Teaching Examination (NOTE) Teacher Evaluation Teacher Licensure Teacher Performance Assessments


This report reviews the scholarly and research evidence supporting the construct labeled modeling and explaining content (MEC), which is measured via a performance assessment in the ETS National Observational Teaching Examination (NOTE) assessment series. This construct involves practices at the heart of teaching that deal with how teachers model and provide explanations for knowledge and skill in the course of instruction. The construct, supporting evidence, and measurement are organized around 4 dimensions: framing the work; demonstrating targeted processes, strategies, or techniques; supplying explanations and other narration during demonstrations; and using language, terminology, and representations. The paper concludes with a description of the MEC performance assessment.

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