For example, sixth graders should &quot;describe simple cycles of the earth, sun and moon that produce eclipses (solar and lunar), a new moon, high and/or low tides, seasons, phases of the moon (crescent to full).
(sixth graders; should describe; simple cycles of the earth, sun and moon that produce eclipses) (simple cycles of the earth, sun and moon; produce; eclipses)
sixth graders simple cycles of the earth, sun and moon
should describe produce
simple cycles of the earth, sun and moon that produce eclipses
eclipses