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Horgan, Joan; Hedge, Robyn – Australian Science Teachers Journal, 1997
Year 11 students investigated the real-world problem of whether screws are really brass. It allowed them to use the colorimeter and computer interface in a way that was easily understood and models normal practice in testing laboratories. Screws were dissolved in nitric acid and their absorbance of red light was compared with a standard curve.…
Descriptors: Chemistry, Computer Interfaces, Computer Uses in Education, Foreign Countries