指向批判性思维培养的钠与水反应再认识

Further Understanding of the Reaction of Sodium and Water Aimed at Cultivating Critical Thinking

充分发挥典型实验探究作用,从宏观和微观层面收集证据,采用证据推理、模型建构等对钠与水实验及现象深入剖析,指出中学阶段对钠的密度、钠的熔化、钠在水面运动的动力、产生氢气的微观机理、爆炸原因以及酚酞加入顺序等存在的不完善认识,基于已有研究成果给出较为合理的解释与建议,有助于培养学生的批判质疑精神。

Give full play to the exploration role of typical experiments,collect evidence from macro and micro levels,use evidence reasoning,model construction,and other methods to deeply analyze sodium and water experiments and phenomena,point out the imperfect understanding of sodium density,sodium melting,sodium movement on water surface,micro mechanism of hydrogen production,explosion reasons,and the order of phenolphthalein addition in middle school,and provide reasonable explanations and suggestions based on existing research results,which helps to cultivate students'critical and questioning spirit.