Children's conceptions of sampling in local ecosystems investigations.

Autor/inn/en	Lehrer, Richard; Schauble, Leona
Titel	Children's conceptions of sampling in local ecosystems investigations.
Quelle	In: Science education, 101 (2017) 6, S. 968-984Infoseite zur Zeitschrift PDF als Volltext Link als defekt meldenVerfügbarkeit
Sprache	englisch
Dokumenttyp	online; gedruckt; Zeitschriftenaufsatz
ISSN	0036-8326; 1098-237X
DOI	10.1002/sce.21297
Schlagwörter	Ökosystem; Grundschulpädagogik; Naturwissenschaftliche Bildung; Grundschulpädagogik; Naturwissenschaftliche Bildung; Naturwissenschaftliches Denken; Ökosystem; Untersuchung
Abstract	This study describes how students' intuitions about sampling are informed by extended experiences in investigating local ecosystems. Elementary students in a rural/suburban district in the upper midwest spent a year conducting first-hand comparative field studies of nearby ponds, prairies, and forests. At the close of the term, we conducted task-based interviews with 26 students at Grades 1/2, 3, and 6 to explore their understanding of the nature and role of samples, particular forms of sampling practices in the field, and the ways in which samples and sampling practices influenced their knowledge about ecosystems. Interviews, which lasted from 60-90 minutes each, were conducted individually. Interviews were designed to address parallel topics at each grade level, although questions were couched in the specific ecosystems investigated by students at their respective grades. Across grades, interview responses reflected transitions in students' understanding of: the concept of a sample, ways to construct a sample, potential sources of sample bias, roles of cause and chance in explaining variability in a sample, ideas about growing sample size, and how to coordinate sample representativeness and sampling variability.
Erfasst von	Arbeitsgruppe Didaktik der Physik, Universität Kassel
Update	2020/3