# First-graders’ spatial-mathematical reasoning about plane and solid shapes and their representations

> Research article (ZDM, 2015) · cited 42× · AI/ML

**Wikidata**: [openalex:W2083241501](https://www.wikidata.org/wiki/openalex:W2083241501)  
**Source**: https://4ort.xyz/entity/first-graders-spatial-mathematical-reasoning-about-plane-and-solid-shapes-and-their-representations