Hydration of Decorative Beads: An Exercise in Measurement, Calculations, and Graphical Analysis

Autor/inn/en	Hill, Rebecca A.; Nicholson, Christopher P.
Titel	Hydration of Decorative Beads: An Exercise in Measurement, Calculations, and Graphical Analysis
Quelle	In: Journal of Chemical Education, 94 (2017) 10, S.1517-1521 (5 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Nicholson, Christopher P.)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0021-9584
DOI	10.1021/acs.jchemed.7b00349
Schlagwörter	Water; Measurement; Statistical Analysis; Computation; Chemistry; Science Instruction; Laboratory Experiments; Laboratory Equipment; College Students; Measurement Equipment; Science Equipment; Graphs; Regression (Statistics); Spreadsheets; Scientific Concepts; Florida + Suchen Sie Ihr Suchwort? Wasser; Messverfahren; Statistische Analyse; Chemie; Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Laboratory work; Laborarbeit; Laborausstattung; Collegestudent; Messinstrument; Grafische Darstellung; Regression; Regressionsanalyse; Spread sheet; Spredsheets; Spreadsheet; Tabellenkalkulation
Abstract	Throughout the general chemistry lab curriculum, a common shortcoming is the way in which students measure, record, and manipulate quantitative data. From initial measurements with different digital and analog instruments to proper conversions, calculations, and comparisons, students are often expected to be experts before they have been taught proper technique and scientific principles. While the start of any General Chemistry 1 course involves a period of familiarization with the scientific method, significant figures, and elements of atomic structure, these often do not correlate well with laboratory experimentation. We have developed an experiment to be conducted during the first weeks of a general chemistry lab that emphasizes measurement techniques, accuracy, average value calculations, and uncertainty of measurement calculations. The experiment is designed such that time versus mass change measurements are taken and used in an introduction to graphical analysis. This allows for the experiment to be done in a short period of time while also affording student-generated data for teaching spreadsheet use, data processing, and linear regression. Instructor feedback and student survey data following this experiment indicate significant improvement in students' abilities to collect and properly analyze data. (As Provided).
Anmerkungen	Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01