Overcoming the Obstacle of Poor Knowledge in Proving Geometry Tasks

Autor/in	Magajna, Zlatan
Titel	Overcoming the Obstacle of Poor Knowledge in Proving Geometry Tasks
Quelle	In: Center for Educational Policy Studies Journal, 3 (2013) 4, S.99-116 (18 Seiten) PDF als Volltext kostenfreie Datei Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1855-9719
Schlagwörter	Secondary School Students; Secondary School Mathematics; Plane Geometry; Mathematical Logic; Validity; Mathematics Skills; Observation; Persuasive Discourse; Computer Assisted Instruction; Computer Software; Logical Thinking; Difficulty Level; Problem Solving; Visualization + Suchen Sie Ihr Suchwort? Sekundarschüler; Planimetrie; Mathematical logics; Mathematische Logik; Gültigkeit; Mathmatics achievement; Mathematics ability; Mathematische Kompetenz; Beobachtung; Persuasion; Persuasive Kommunikation; Computer based training; Computerunterstützter Unterricht; Schwierigkeitsgrad; Problemlösen; Visualisation; Visualisierung
Abstract	Proving in school geometry is not just about validating the truth of a claim. In the school setting, the main function of the proof is to convince someone that a claim is true by providing an explanation. Students consider proving to be difficult; in fact, they find the very concept of proof demanding. Proving a claim in planar geometry involves several processes, the most salient being visual observation and deductive argumentation. These two processes are interwoven, but often poor observation hinders deductive argumentation. In the present article, we consider the possibility of overcoming the obstacle of a student's poor observation by making use of computer-aided observation with appropriate software. We present the results of two small-scale research projects, both of which indicate that students are able to work out considerably more deductions if computer-aided observation is used. Not all students use computer-aided observation effectively in proving tasks: some find an exhaustive computer-provided list of properties confusing and are not able to choose the properties that are relevant to the task. (As Provided).
Anmerkungen	University of Ljubljana, Faculty of Education. University of Ljubljana Kardeljeva plošcad 16. Slovenia. Tel: +386-1-5892-344; e-mail: editors@cepsj.si; Web site: http://www.cepsj.si/doku.php?id=en:cepsj
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01