Teaching for generalization: An array approach to equivalent fractions

Autor:	BEARDSLEE, EDWARD C., GAU, GERALD E., HEIMER, RALPH T.
Zdroj:	The Arithmetic Teacher, 1973 Nov 01. 20(7), 591-599.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/41188351 Zobrazit plný text záznamu