Learning about simple machines with graphic organizers / Kravetz, Jonathan

Presents a short study about simple machines and includes graphic organizers that describe how a screwdriver works, levers, wheel and axles, pulleys, gears, and inclined planes and wedges.

Presents a short study about simple machines and includes graphic organizers that describe how a screwdriver works, levers, wheel and axles, pulleys, gears, and inclined planes and wedges.