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Abstract

This research was aimed to analyze the mastery of the concept of pressure on interactive demonstration learning model with formative feedback. The study involved 45 students of class VIII SMP Negeri 2 Rembang. The learning process is designed using the interactive learning demonstration stages in which it integrates with formative feedback. Tests form two-tiers as a measure of mastery of student concepts given before and after learning. The test results were analyzed qualitatively and quantitatively. The result of the analysis shows that the learning has an influence on the mastery of student concept with very strong category (very strong). The result of the improvement of students' master comprehension score before and after learning is in the medium category. Students experience an increased level of mastery of the concept from low to high on cognitive indicators of inhibiting (C1), and an increase in concept mastery level from low to moderate on understanding indicators (C2). Overall score indicator mastery of the concept of pressure. In the cognitive indicators of understanding (C3) and analysis (C4) has increased in the low category.

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