Autor:	Roseann Feldmann, Sally M. Walker
Předmět:	Wheels--Juvenile literature, Axles--Juvenile literature
Kategorie:	JUVENILE NONFICTION / Science & Nature / Physics, JUVENILE NONFICTION / Science & Nature / Experiments & Projects, JUVENILE NONFICTION / Technology / Machinery & Tools
Popis:	Of the six simple machines, the wheel and axle is probably the most recognized. But how does it help you work? Simple and fun experiments illustrate the basic concepts explained in the text to show you just how easy work can be.
Databáze:	eBook Index
Externí odkaz:	Zobrazit plný text záznamu