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The roles of models in understanding science


Linkages to NSS curriculum:

NSS Chemistry: Topic II Microscopic World I
NSS Chemistry: Topic VI Microscopic World II
NSS Chemistry: Topic XI Chemistry of Carbon Compounds

NOS/STSE features of this package:

1. A model can be regarded as a representation of an idea, an event, a process or a system.
2. Every model has its strengths and weaknesses.
3. The strengths and weaknesses of a model depend on the context or purpose.
4. A model is not a direct copy of reality.


Word Files

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Teaching PowerPoint Files

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Word Files
(with links to video exemplars)

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Teacher's Version (English)

Teacher's Version (Chinese)

Student's Version (English)
Student's Version (Chinese)

Exemplar Video Files are only available in the DVD version.

Please contact Dr. Alice Wong for a copy. (Email: )