# Further exploration of the classroom video analysis (CVA) instrument as a measure of usable knowledge for teaching mathematics: taking a knowledge system perspective

> Research article (ZDM, 2015) · cited 38× · AI/ML

**Wikidata**: [openalex:W2190196884](https://www.wikidata.org/wiki/openalex:W2190196884)  
**Source**: https://4ort.xyz/entity/further-exploration-of-the-classroom-video-analysis-cva-instrument-as-a-measure-of-usable-knowledge-for-teaching-mathema