指向观念建构和创新思维培养的高中化学教学——炔烃

Teaching Design of “Alkyne”in Senior High School Chemistry to Construction of Fundamental Ideas and Cultivation of Innovative Thinking

以人教版选择性必修3“炔烃”为例,围绕“工业乙烯中少量乙炔脱除”问题的解决,设计“立足经验,提出除杂方法”“依据结构,思考除杂新方法”“通过探究,评估除杂方法”“结合讨论,评价新技术”“总结归纳,构建认知模型”等教学环节,引导学生从结构入手,以探究为主线,对乙炔的性质展开学习与讨论,明晰乙炔的用途,促进学生分类观、微粒观、变化观、实验观和化学价值观等化学基本观念的建构,培养学生的创新意识和创新思维。

Taking selective compulsory 3“alkyne”as example,centering on the solution of the problem of“removing a small amount of acetylene from industrial ethylene”,this paper designs teaching links such as“based on experience,putting forward the method of removing impurity”,“thinking about the new method of removing impurity according to the structure”,“evaluating the method of removing impurity through exploration”,“evaluating the new technology combined with discussion”,“summarizing and concluding to construct cognitive model”,guides students to start from the structure,to explore as the main line,to study and discuss the nature of acetylene,to clarify the use of acetylene,promotes the construction of students’chemistry fundamental ideas such as classification ideas,particle ideas,change ideas,experiment ideas and chemical value ideas,and cultivates their innovative consciousness and innovative thinking.