Conceptual Understanding of Multiplication: Problems Involving Combination

Autor:	Quintero, Ana Helvia
Zdroj:	The Arithmetic Teacher, 1985 Nov 01. 33(3), 36-39.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/41194076 Zobrazit plný text záznamu