<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>10</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Caneco, R.</style></author><author><style face="normal" font="default" size="100%">Rocha, H.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">O uso de exemplos na demonstração: um estudo com alunos do 11.º ano</style></title><secondary-title><style face="normal" font="default" size="100%">SIEM</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2019</style></year></dates><publisher><style face="normal" font="default" size="100%">APM</style></publisher><pub-location><style face="normal" font="default" size="100%">Castelo Branco, Portugal</style></pub-location><abstract><style face="normal" font="default" size="100%">&lt;p&gt;This article focuses the choice and use of examples by two students of the 11th grade to prove or refute a set of statements. The use of representations of sequences and functions is also considered. The study adopts a qualitative approach and data were collected by interviews and documental gathering. The conclusions suggest most of the examples used were well-known sequences or functions. However, the students sought different purposes for the use of examples, such as understanding the conjecture, demonstrate the falsity or truthfulness of the statement and conveying a general argument. The students made a satisfactory articulation between the various types of representations but relied mostly in the cartesian graph.&lt;/p&gt;
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