February 18th Theme Unit - The Discovery of Pluto

February 18th
Theme Unit

The Discovery of Pluto

Pluto
Reading Level

	edHelper's suggested reading level:	grades 5 to 7
	Flesch-Kincaid grade level:	6.65

Vocabulary

	challenging words:		elliptical, fly-by, planetary, probe, spacecraft, orbit, atmosphere, gravity, mainly, mathematical, ponder, outer, ninth, rotation, launched, core
	content words:		Take Pluto, We Know, Hubble Space Telescope, Clyde Tombaugh, Lowell Observatory, Percival Lowell, We Don't Know, International Astronomical Union, New Horizons, Kuiper Belt

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