http://www.bibsonomy.org/burst/tag/bibtex-importBibSonomy BuRST Feed for /tag/bibtex-import2008-07-27T04:05:04+02:00http://www.bibsonomy.org/bibtex/2ea28caba038ad2d52c2c10fb9c7b7bba/yishyish2008-04-27T20:07:24+02:00logic it need fetch argumentation proof logical implication deduction read mythesis bibtex-import <span style="color:#555555;">Celia <a href="http://www.bibsonomy.org/author/Hoyles">Hoyles</a> and Dietmar <a href="http://www.bibsonomy.org/author/Küchemann">K&#252;chemann</a> </span><em>Educational Studies in Mathematics</em>(<em>2002</em>)Sun Apr 27 20:07:24 CEST 2008Educational Studies in Mathematics193--223Students understandings of logical implication512002logic it need fetch argumentation proof logical implication deduction read mythesis bibtex-import We report results from an analysis of responses to a written question in which high-attaining students in English schools, who formed part of a longitudinal nation-wide survey on proof conceptions, were asked to assess the equivalence of two statements about elementary number theory, one a logical implication and the other its converse, to evaluate the truth of the statements and to justify their conclusions. We present an overview of responses at the end of Year 8 (age 13 years) and an analysis of the approaches taken, and follow this with an analysis of the data collected from students who answered the question again in Year 9 (age 14 years) in order to distinguish learning trajectories. From these analyses, we distinguished three strategies, empirical, focussed-empirical and focussed-deductive, that represent shifts in attention from an inductive to a deductive approach. We noted some progress from Year 8 to Year 9 in the use of the focussed strategies but this was modest at best. The most marked progress was in recognition of the logical necessity of a conclusion of an implication when the antecedent was assumed to be true. Finally we present some theoretical categories to capture different types of meanings students assign to logical implication and the rationale underpinning these meanings. The categories distinguish responses where a statement of logical implication is (or is not) interpreted as equivalent to its converse, where the antecedent and consequent are (or are not) seen as interchangeable, and where conclusions are (or are not) influenced by specific data.http://www.bibsonomy.org/bibtex/2e366c2015ffa07f53f6e44b9c3463509/nlepottiernlepottier2008-01-19T14:59:57+01:00bibtex-import <span style="color:#555555;">Olivier <a href="http://www.bibsonomy.org/author/Ertzscheid">Ertzscheid</a> </span><em>November2007. </em>Sat Jan 19 14:59:57 CET 2008AffordanceNovemberBienvenue dans le World Life Web2007bibtex-import http://www.bibsonomy.org/bibtex/2573ef555b7b6c72215cedf40f08380fa/gromgullgromgull2007-11-01T15:17:34+01:00bibtex-import <span style="color:#555555;">J. <a href="http://www.bibsonomy.org/author/Grant">Grant</a> and D. <a href="http://www.bibsonomy.org/author/Beckett">Beckett</a> </span><em>urlhttp://www.w3.org/TR/2004/REC-rdf-testcases-20040210/, </em><em>February2004. </em>Thu Nov 01 15:17:34 CET 2007\url{http://www.w3.org/TR/2004/REC-rdf-testcases-20040210/}February{RDF} Test CasesRecommendation2004bibtex-import http://www.bibsonomy.org/bibtex/29def32d8fa2695616a9184dac18bf6ab/fsteegfsteeg2007-10-07T10:44:45+02:00semantics logic linguistics bibtex-import <span style="color:#555555;">G. <a href="http://www.bibsonomy.org/author/Frege">Frege</a> </span><em>Funktion - Begriff - Bedeutung, </em><em>volume4ofSammlung Philosophie, </em><em>Vandenhoeck &amp; Ruprecht, </em><em>G&#246;ttingen, </em>(<em>1892</em>)Sun Oct 07 10:44:45 CEST 2007G"ottingenFunktion - Begriff - BedeutungSammlung Philosophie"Uber Sinn und Bedeutung41892semantics logic linguistics bibtex-import http://www.bibsonomy.org/bibtex/299db644f4d320594c11fc88e9909b4e5/fsteegfsteeg2007-10-07T10:44:45+02:00linguistics bibtex-import ma-asw-polysemy polysemy <span style="color:#555555;">Theo <a href="http://www.bibsonomy.org/author/Janssen">Janssen</a> </span><em>Cognitive Approaches to Lexical Semantics, </em><em>23, </em><em>Mouton de Gruyter, </em><em>Berlin, New York, </em>(<em>2003</em>)Sun Oct 07 10:44:45 CEST 2007Berlin, New YorkCognitive Approaches to Lexical Semantics2393--122Cognitive Linguistics ResearchMonosemy versus polysemy2003linguistics bibtex-import ma-asw-polysemy polysemy http://www.bibsonomy.org/bibtex/2a4f5bf1d348843b953aa2c647aaabfca/fsteegfsteeg2007-10-07T10:44:45+02:00linguistics bibtex-import polysemy ma-asw-polysemy <span style="color:#555555;">Jordan <a href="http://www.bibsonomy.org/author/Zlatev">Zlatev</a> </span><em>Cognitive Approaches to Lexical Semantics, </em><em>23, </em><em>Mouton de Gruyter, </em><em>Berlin, New York, </em>(<em>2003</em>)Sun Oct 07 10:44:45 CEST 2007Berlin, New YorkCognitive Approaches to Lexical Semantics23447--494Cognitive Linguistics ResearchPolysemy or generality? 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For example, in a study of different preparations to control head lice all children in the same class were allocated to receive the same preparation. This was done to avoid contaminating the treatment groups through contact with control children in the same class. The children in the class cannot be considered independent of one another and the analysis should take this into account. There will be some loss of power due to randomising by cluster rather than individual and this should be reflected in the sample size calculations. Here we describe sample size calculations for a cluster randomised trial.http://www.bibsonomy.org/bibtex/2e60f5d7f4dbde9a1fb35550b9d5572b9/willwadewillwade2007-02-16T15:24:54+01:00bibtex-import notes bmj statistics <span style="color:#555555;">Douglas G. <a href="http://www.bibsonomy.org/author/Altman">Altman</a> and Martin M. <a href="http://www.bibsonomy.org/author/Bland">Bland</a> </span><em>BMJ</em>(<em>1997</em>)Fri Feb 16 15:24:54 CET 2007BMJ7098{Statistics Notes: Units of analysis}3141997bibtex-import notes bmj statistics http://www.bibsonomy.org/bibtex/2ae866633e5c4938624cea5b0524bd407/willwadewillwade2007-02-16T15:24:54+01:00bibtex-import statistics bmj notes <span style="color:#555555;">Martin M. <a href="http://www.bibsonomy.org/author/Bland">Bland</a> and Douglas G. <a href="http://www.bibsonomy.org/author/Altman">Altman</a> </span><em>BMJ</em>(<em>1997</em>)Fri Feb 16 15:24:54 CET 2007BMJ7080{Statistics notes: Cronbach's alpha}3141997bibtex-import statistics bmj notes http://www.bibsonomy.org/bibtex/2174a78e3e5e1732dade3ab14b6e575cb/willwadewillwade2007-02-16T15:24:54+01:00notes bibtex-import bmj statistics <span style="color:#555555;">Douglas G. <a href="http://www.bibsonomy.org/author/Altman">Altman</a> and Martin M. <a href="http://www.bibsonomy.org/author/Bland">Bland</a> </span><em>BMJ</em>(<em>1996</em>)Fri Feb 16 15:24:54 CET 2007BMJ7066{Statistics Notes: Detecting skewness from summary information}3131996notes bibtex-import bmj statistics