Early stages of proportional reasoning : a cross-sectional study with 5- to 9-year-olds

Autor:	Vanluydt, Elien, Degrande, Tine, Verschaffel, Lieven, Van Dooren, Wim
Zdroj:	European Journal of Psychology of Education, 2020 Sep 01. 35(3), 529-547.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/48707323 Zobrazit plný text záznamu Full text from SpringerLink