Assessing Laboratory Learning

Student response to identifying an unknown is a good way to assess how much they learned in this activity. Demonstration of important manipulative techniques can also give a clue to students' experimental progress.

It's important that students "see" the relationships among bonding, structure, and properties. This activity reinforces such learning and stimulates numerous questions that can measure student comprehension. For example, it's possible to provide "experimental data" similar to that developed in the laboratory for a particular substance and challenge students to classify the substance as ionic solid, covalent network solid, molecular solid, or metal.

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