This paper focuses on POE("Prediction-observation-interpretation")strategy to carry out classroom practice teaching of nitric acid chemical properties.Taking the chemical properties of nitric acid as the main line,students use the existing experience to predict the chemical properties of nitric acid according to the knowledge situation created by teachers.Observe the experimental phenomena and results,explain the rationality of the prediction and draw the correct conclusion.Evaluation tasks are set in each link of teaching;group cooperation and experimental exploration develop students'key competencies,reflecting the teaching concept of"teaching-learning-evaluation"integration.POE strategy makes full use of students'existing experience,reflects the student-centered classroom,and is conducive to cultivating students'ability of observation,communication,analysis and problem solving.Taking"Chemical properties of nitric acid"as an example,the teaching scheme is designed and the classroom case study is carried out in order to provide teaching reference ideas for middle school teachers.
关键词
POE策略/硝酸化学性质/课堂教学
Key words
POE strategy/chemical properties of nitric acid/classroom teaching
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