Idea Bank: Measurement by the Numbers

Autor/in	Metz, Julia
Titel	Idea Bank: Measurement by the Numbers
Quelle	In: Science Teacher, 83 (2016) 8, S.18-20 (3 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0036-8555
Schlagwörter	Science Instruction; Science Laboratories; Chemistry; Measurement; Formative Evaluation; Measurement Equipment; Summative Evaluation; Science Process Skills; Grade 10; Secondary School Science + Suchen Sie Ihr Suchwort? Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Chemie; Messverfahren; Messinstrument
Abstract	Most laboratory activities conducted by students involve measurement, and measurement can only be as precise as the instrument with which it is made. When Julia Metz began her teaching career, she assumed most of the 10th grade chemistry students would have previously used common measuring devices such as metric rulers, graduated cylinders, thermometers, and triple beam balances. Even those experienced with these tools however often do not read the equipment accurately and precisely, so Metz started training students in measurement. Here she describes tips and techniques she uses as she begins this training process with a simple formative assessment involving a standard metric ruler and an index card and moves on to other, more complex measuring devices such a thermometers and graduated cylinders. Once all training is complete, students carry out a summative evaluation in the form of a lab practical to demonstrate their proficiency in using measuring devices. Wearing safety glasses (as always in the lab), students demonstrate proficiency using different measuring devices at each of 12 lab stations. The number of stations and activities can easily be varied according to space or time constraints. (ERIC).
Anmerkungen	National Science Teachers Association. 1840 Wilson Boulevard, Arlington, VA 22201-3000. Tel: 800-722-6782; Fax: 703-243-3924; e-mail: membership@nsta.org; Web site: http://www.nsta.org
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01