Unit teaching design of project-based learning for senior high school chemistry from the perspective of big idea:Taking the"conversion of sulfur-containing substances in wine"as an example
Under the guidance of big idea,discovering and solving problems based on real situations is an impor-tant method to understand the properties and transformations of elements and compounds,and also an important way to implement core disciplinary competencies.By extracting big idea and designing driving problems based on situations,the unit planning for the theme of"sulfur conversion"is completed.This paper structures the teaching content,conducts group experiments with student exploration as the main focus,uses the"valence class"two-dimensional graph model to understand the transformation of sulfur-containing substances in wine,and cultivates students'innovative spirit and practical ability.In the process of participating in social issues such as food safety and acid rain,students recognize the importance of protecting the environment and rational use of resources,and their sense of social responsibility and concept of green chemistry are cultivated.
big ideaproject-based learningunit teachingfood additivestransformational viewconcept of green chemistry
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