grades 5&#150;8 Exploring Energy: Waterwheels, Windmills, and Sunlight Children observe three natural energy sources &#151; flowing water, wind, and sunlight &#151; and construct devices to harness these sources of energy.
(grades 5&#150;8 Exploring Energy: Waterwheels, Windmills, and Sunlight Children; observe; three natural energy sources &#151; flowing water, wind, and sunlight &#151) (grades 5&#150;8 Exploring Energy: Waterwheels, Windmills, and Sunlight Children; construct; devices to harness these sources of energy) (devices; to harness; these sources of energy)
grades 5&#150;8 Exploring Energy: Waterwheels, Windmills, and Sunlight Children grades 5&#150;8 Exploring Energy: Waterwheels, Windmills, and Sunlight Children devices
observe construct to harness
three natural energy sources &#151 flowing water, wind, and sunlight &#151
devices to harness these sources of energy
these sources of energy