This activity is useful for teachers who are discussing the the motion of the sun, moon and earth and how they all interact and cause daily motion, phases of the moon, and eclipses.
Lehman, K. (Ed.). (1997). Sun, Earth and Moon Activity. Retrieved June 19, 2013, from http://www.pa.msu.edu/courses/1997spring/ISP205/sec-3/moon.act.ans.html
%0 Electronic Source %D 1997 %T Sun, Earth and Moon Activity %E Lehman, Kara %V 2013 %N 19 June 2013 %9 text/html %U http://www.pa.msu.edu/courses/1997spring/ISP205/sec-3/moon.act.ans.html
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