This website provides an interactive applet and tutorial on understanding the sun-earth-moon relationship. There are three tutorial pages that explain the elements of the lunar phases diagram one-by-one. Second, there is the lunar phases tool and quiz. The tool is an interactive version of the diagram and can be used to solve the problems posed by the quiz.
%0 Electronic Source %T Lunar Phases Web Tool %V 2013 %N 18 May 2013 %9 application/java %U http://www.calvin.edu/~lmolnar/moon/
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