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Abstract

This development research is done to make a valid, practical, and effective, learning design and tools, and will be implemented for learning to examine the effect to the student concept mastery. Data collection uses validity sheets and practicality obtained from validators, the effectiveness and test hypotheses test obtained from the students. The research results are 85.55% valid, 90.00% practice, and 85% effective in increasing students' concepts mastery. Hypothesis test results have a value (p = 0.001) <(α = 0.05) which means a significant difference between the control class and the experimental class result. The implementation is better to done in the long term because Science Learning based on inquiry need a repeated training to get a maximum results.

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