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教学目标1.能在实验中发现不同颜色的材料吸收热量有快有慢。2.能实事求是、准确地测量并记录实验现象。3.能通过分析实验现象得出深色材料比浅色材料吸收热辐射快的结论。4.能举出生活中利用不同颜色的材料的例子,能解释生活中利用热辐射特点的一些现象。教学过程一、导入新课师:(教师手中藏着事先画好熊猫图的泡沫板)孩子们,猜猜老师手里拿的是什么?生:是一张泡沫板。师:这是一张普通的泡沫板,但是课前老师在这上面画了一只熊猫。如果我把它放到这盏灯下,
Teaching Objectives 1. Can be found in the experiment different colors of materials to absorb heat faster and slower. 2. To seek truth from facts, accurate measurement and recording of experimental phenomena. Through the analysis of experimental phenomena, it can be concluded that darker material absorbs thermal radiation faster than light-colored material. 4. Can give examples of life using different color materials, can explain some of the phenomena of life using the characteristics of thermal radiation. Teaching process First, the introduction of a new class teacher: (teachers hide the hand panda figure pre-painted foam board) Children, guess the teacher's hand is what? Health: is a foam board. Teacher: This is a normal foam board, but the teacher before class draws a panda on it. If I put it under this light,