The Application of the"Macro-Micro-Symbol"Triple Representation Method in Middle School Chemistry Experiment Teaching——Taking the"Test of Fe2+ and Fe3+"as an Examplei
This article takes the classroom experimental teaching of the"test of Fe2+ and Fe3+"as an example to guide students to observe exper-imental phenomena from a macro perspective,explain experimental phenomena from a micro perspective,and finally use the unique language of chemistry writing"ion reaction equations"for symbol representation.This"macro-micro-symbol"triple representation method is conducive to the students'chemical knowledge study and the construction of the three inherent links,and has become a unique thinking model for chemis-try learning,especially experimental inquiry learning.
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