Chemistry seeks to provide qualitative and quantitative
explanations for the observed behaviour of elements and their
compounds. Doing so involves making use of three types of
representation: the macro (the empirical properties of substances);
the sub-micro (the natures of the entities giving rise to those
properties); and the symbolic (the number of entities involved in
any changes that take place). Although understanding this triplet
relationship is a key aspect of chemical education, there is
considerable evidence that students find great difficulty in
achieving mastery of the ideas involved. In bringing together the
work of leading chemistry educators who are researching the triplet
relationship at the secondary and university levels, the book
discusses the learning involved, the problems that students
encounter, and successful approaches to teaching. Based on the
reported research, the editors argue for a coherent model for
understanding the triplet relationship in chemical education.
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