INSTRUCTIONS

How to check the description of the resources:

1	-	connect to Educasource, http://www.educasource.education.fr
2	-	in the search area, clic on the " options + " item
3	-	in the right area entitled "Accès direct par référence", enter one of the following number : " 21997 " for Background information for simple machines or " 22045 " for Background information for Energy
4	-	press Ok.