Procedure
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Teacher taught the concept through traditional ‘Chalk & talk’ method.
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A pre-test was conducted and scores were recorded.
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The class was divided into groups.
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A sub topic was given to each group.
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Students conducted research on the given sub-topic .
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Discussions followed between the group members on their
understanding.
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Each group shared its understanding with the class.
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A post-test was conducted.
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Pre & post tests data was analysed.