A survey of teachers' opinions of a revised mathematics curriculum

Autor:	LEISSA, ARTHUR W., FISHER, ROBERT C.
Zdroj:	The Mathematics Teacher, 1960 Feb 01. 53(2), 113-118.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/27956079 Zobrazit plný text záznamu