Research and Practice in Chemistry Education by Unknown

Author:Unknown
Language: eng
Format: epub
ISBN: 9789811369988
Publisher: Springer Singapore

Experiment/observation

Manipulate

Not manipulate

Test hypothesis

Manipulative hypothesis test

Non-manipulative

Measure parameter

Manipulative description or measure

Non-manipulative description or measure

The convergence of evidence from different methods can then be used to lead to a broad explanation. It is not one method or one line of experimental or observational evidence that support complex theoretical claims but several lines of evidence need to be synthesised to bring about the level of theoretical rigour that is typically associated with established scientific knowledge. Components of evidence from these different sources drive explanatory frameworks. Erduran and Dagher (2014) identified examples of methods in chemistry (see Table 9.2). They drew on the work of Scerri (2007) who describes how Mendeleev predicted the existence of the element gallium (or eka-aluminium) through a non-manipulative description coupled with quantitative reasoning about atomic weights:Table 9.2Methods related to the Periodicity of Elements (from Erduran & Dagher, 2014, p. 102)

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