# PORTAAL: A Classroom Observation Tool Assessing Evidence-Based Teaching Practices for Active Learning in Large Science, Technology, Engineering, and Mathematics Classes

> Research article (CBE—Life Sciences Education, 2015) · cited 182× · AI/ML

**Wikidata**: [openalex:W2307728084](https://www.wikidata.org/wiki/openalex:W2307728084)  
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