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Garvey, Sarah L.; Shahmohammadi, Golbon; McLain, Derek R.; Dietz, Mark L. – Journal of Chemical Education, 2015
A laboratory experiment is described in which students compare two methods for the determination of the calcium content of commercial dietary supplement tablets. In a two-week sequence, the sample tablets are first analyzed via complexometric titration with ethylenediaminetetraacetic acid and then, following ion exchange of the calcium ion present…
Descriptors: Dietetics, Comparative Analysis, Statistical Analysis, Laboratory Experiments
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Gerlovich, Jack A.; Whitsett, John; Lee, Shelley; Parsa Rahul – Science Teacher, 2001
Describes a safety program for teaching science. In the summer of 1999, specific Wisconsin safety laws, codes, and standards were researched and a training program including content, training sites, and dates was developed. One-day training programs were planned for six regions throughout the state. (SAH)
Descriptors: Classroom Techniques, Laboratory Safety, School Safety, Science Education