The Social Utility Theory as Applied to Arithmetic, Its Research Basis, and Some of Its Implications

Autor:	Wilson, Guy M.
Zdroj:	The Journal of Educational Research, 1948 Jan 01. 41(5), 321-337.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/27528912 Zobrazit plný text záznamu