Simple machines

"Thirteen experiments about simple machines - levers, wheels, axels, pullies, wedges and screws - teach kids basic science. Full-colour photographs and step-by-step instructions explain each activity, so that kids can make most of the machines with minimal help from adults" Cf. Our choice, 1997-1998.

שנה

1997

שפה

English

סדרה

Starting with science

הוצאה

Heinemann Children's Reference

מהדורות

2

עמודים

32

ISBN

9780431016191

מקור הנתונים: Wikidata