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TEACHING METHODOLOGY NO: 2 DEMONSTRATION METHOD
AIM: To determine the understanding of the subject through demonstration method. To determine students’ level of interest towards subject while implementing demonstration method. CONTENT OUTLINE: Burning of candle involves both physical and chemical changes. During burning, the wax melts. Here, the wax has changed from solid to liquid state. This is a physical change. The wax near the wick of the candle burans and gives new substance like CO2, carbon soot, water vapors, heat etc., this is a chemical change. PROCEDURE: The teacher explains the characteristics of physical and chemical change. After explanation the teacher lights the candle and allows the candle to burn for some time. Meanwhile he explains the ingredients involved in the process of candle making. Now, the teacher asks student to observe the happening. Encourages the responses and develops the concept. The teacher lists the changes ...
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