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5-1-WHAT ARE FORCES?
pag.86-87
STATIC ELECTRICITY EXPERIMENT
5-2-WHAT ARE MACHINES?
pag.88-89
5-3-HOW HAVE MACHINES CHANGED?
pag.90-91
5-4-HOW DO WE USE MACHINES IN DAILY LIFE?
pag.92-93
5-5-SIMPLE MACHINES PROJECTS
pag.94