WHAT IS A FOOT UNDER YOUR FEET? A project-based science unit for fifth graders explores soil quality

Autor:	Tuttle, Nicole, Obringer, Mary, Czajkowski, Kevin, Czerniak, Charlene M.
Zdroj:	Science and Children, 2014 Nov 01. 52(3), 49-53.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/43501121 Zobrazit plný text záznamu