Abstract In order to effectively implement the core literacy of chemistry, from the perspective of chemistry subject,this study attempted to explore how teacher understands the content of the course.By analyzing experts team’s design process based on grounded theory, this study found that the objects of subject understanding were mainly chemical concepts. In different levels of concept understanding, chemical discipline thinking methods were integrated. Taking the understanding of the core concept of carbonyl as an example, go through the following four steps. (1)Comparing hydrocarbons, the specificity of acetaldehyde was carbonyl. (2)Discovering primitive question based on carbonyl characteristics: how to understand the properties of carbonyl from the perspective of structure. (3)Extracting cognitive perspectives using a comparison-classification logic method: polar multiple bonds. (4)Use hybridization and electronegativity to understand the structural characteristics of carbonyl groups, and develop ideas in combination of macro and micro.
ZHANG Xiao-Yan, ZHENG Chang-Long. Research on Subject Understanding of Chemistry Teaching Contents: Structure and Properties of Aldehydes[J]. Chinese Journal of Chemical Education, 2020, 41(17): 54-59.