# Analyzing the written discourse in calculus textbooks over 42 years: the case of primary objects, concrete discursive objects, and a realization tree of the derivative at a point

> Research article (Educational Studies in Mathematics, 2022) · cited 10× · AI/ML

**Wikidata**: [openalex:W4290647441](https://www.wikidata.org/wiki/openalex:W4290647441)  
**Source**: https://4ort.xyz/entity/analyzing-the-written-discourse-in-calculus-textbooks-over-42-years-the-case-of-primary-objects-concrete-discursive-obje