Children's unit concepts in measurement: a teaching experiment spanning grades 2 through 5.

Autor/inn/en	Barrett, Jeffrey E.; Cullen, Craig; Sarama, Julie; Clements, Douglas H.; Klanderman, David
Titel	Children's unit concepts in measurement: a teaching experiment spanning grades 2 through 5.
Quelle	In: ZDM : mathematics education, 43 (2011) 5, S. 637-650 PDF als Volltext Link als defekt meldenVerfügbarkeit
Sprache	englisch
Dokumenttyp	online; gedruckt; Zeitschriftenaufsatz
ISSN	1863-9690; 1863-9704
DOI	10.1007/s11858-011-0368-8
Schlagwörter	Bildungsforschung; Pädagogische Forschung; Schuljahr 02; Schuljahr 05; Lernen; Unterrichtseinheit; Fläche; Rauminhalt; Umfang; Musikgruppe; Lautstärke; Messverfahren; Volumen; Bewertung
Abstract	We examined ways of improving students' unit concepts across spatial measurement situations. We report data from our teaching experiment during a six-semester longitudinal study from grade 2 through grade 5. Data include instructional task sequences designed to help children (a) integrate multiple representations of unit, (b) coordinate and group units into higher-order units, and (c) recognize the arbitrary nature of unit in comparison contexts and student's responses to tasks. Our results suggest reflection on multiplicative relations among quantities prompted a more fully-developed unit concept. This research extends prior work addressing the growth of unit concepts in the contexts of length, area, and volume by demonstrating the viability of level-specific instructional actions as a means for promoting an informal theory of measurement.
Erfasst von	FIZ Karlsruhe - Leibniz-Institut für Informationsinfrastruktur
Update	2012/3