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说明: 本案例设计是从孩子们日常生活中常见的冰易拉罐饮料置于常温中,罐外有水珠这一现象引发学生思考。教师通过引入一个相同的现象:在一空玻璃瓶中加入冰块,盖上瓶盖,用纸巾将瓶子外壁擦干,待会儿发现与易拉罐一样的现象出现:瓶外也有水珠,让孩子对此现象进行大胆的猜想与假设。学生通过实验的方法收集证据,分析得出结论:水珠来源于空气中的水蒸气。学生的学习过程是一个科学探究过程:发现并明确探究的问题——猜想与假设——通过实验的方法收集证据——分析论证——解释、得出结论。
Description: This case design is from the children's daily life, ice cans beverage placed in room temperature, the phenomenon of water droplets outside the jar triggered the students to think. The teacher introduced the same phenomenon by adding ice cubes to an empty glass bottle, closing the bottle cap, wiping the outer wall of the bottle with paper towels, and later noting the same phenomenon as the cans: there are drops of water outside the bottle, This phenomenon makes bold conjectures and assumptions. Students collected evidence through experimental methods and concluded that water droplets originate from water vapor in the air. The learning process of students is a process of scientific inquiry: discovering and clearly exploring problems - conjecture and hypothesis - collecting evidence through experimental methods - analyzing and arguing - explaining and drawing conclusions.