Teaching Practice Based on"Evidence Reasoning and Model Cognition"Literacy——Take the Teaching of"Applying the Ball and Bat Model to Judge the Collinear Coplanarity Problem of Organic Matter"as an Example
"Collinear and coplanar problem of organic atoms"is one of the important contents of organic chemistry,and its content has strong spatial inference.In order to help students intuitively feel the actual spatial configuration of organic molecules and master the general law of the collinear and coplanar problem of organic atoms,the teaching practice activities are designed.Taking the teaching of"Judging the collinear and Coplanar problem of organic Matter with ball-and-stick Model"as an example,this paper uses ball-and-stick model to explore the teaching and realizes the construction from ball-and-stick model to thinking model.Through analysis and reasoning and model evidence,students understand that the bonding mode of carbon atoms determines the spatial structure essence of organic matter,and establish a cognitive model.They can use the model independently to explain chemical phenomena and reveal the nature of chemistry,thus breaking through the important and difficult points of learning organic spatial structure,and cultivating students'"evidence reasoning and model cognition"quality.
organic chemistrycollinear and coplanarmodel thinkingcore quality
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