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Learning Effectivity Formula

Posted By: Ely Djulia on May 21, 2006
My student is conducting her research to implement cooperative learning on chemistry classroom by applying experimental method. T-test is used to know whether there is significant differences of learning achievement between control group and experimental group. She also wants to know lerning effectivity by using this formula:
mean score of exp. - mean score of control
learning effectivity = __________________________________________ x 100%
mean score of control

Is the formula above feasible in educational research?
Is anybody can give us your comment, or suggestion?

Thank You

Ely Djulia
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 Learning Effectivity Formula by Ely Djulia on May 21, 2006
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