# The number line estimation task is a valid tool for assessing mathematical achievement: A population-level study with 6484 Luxembourgish ninth-graders

> Research article (Journal of Experimental Child Psychology, 2022) · cited 18× · AI/ML

**Wikidata**: [openalex:W4291237896](https://www.wikidata.org/wiki/openalex:W4291237896)  
**Source**: https://4ort.xyz/entity/the-number-line-estimation-task-is-a-valid-tool-for-assessing-mathematical-achievement-a-population-level-study-with-648