O presente trabalho teve como objetivo analisar a eficácia dos componentes de um tutorial computadorizado sobre o desempenho dos participantes na realização de tentativas discretas. Foi realizada uma replicação do estudo de Faggiani (2014). A presente pesquisa foi conduzida com oito estudantes de graduação de Psicologia de uma faculdade pública (Experimento I) e outros dois estudantes de graduação (Experimento II). Os participantes foram submetidos a um tutorial computadorizado, contendo animações, vídeo-modelação e textos contendo conceitos, com o objetivo de ensinar tentativas discretas de emparelhamento de identidade. No Experimento I, os participantes foram divididos em quatro grupos e submetidos a quatro módulos (Ensino Teórico, Vídeo-Modelação, Observação de Correção e Identificação de Erros), em ordens diferentes. As ordens de apresentação dos módulos de ensino foram alteradas entre grupo de participantes, de forma a avaliar a efetividade de cada um dos módulos no ensino de procedimentos de tentativa discreta. Após cada um dos módulos, o desempenho dos participantes era avaliado em um pós-teste com o experimentador atuando como uma criança com autismo. Ao atingir critério de 100% de acertos, os participantes realizavam uma fase de follow up. Caso não fosse atingido critério após o tutorial, o participante realizava uma fase de ensino presencial. Foi realizado um delineamento de linha de base múltipla em cada Grupo. Durante o procedimento, os participantes não foram ensinados a realizar imitação motora, entretanto era permitido que lessem a folhas-resumo com os passos da tentativa-discreta de emparelhamento e imitação antes de cada teste. O Experimento II avaliou os efeitos das folhas-resumo com os passos das tentativas discretas sobre o desempenho de dois participantes. Os resultados demonstram que sete de oito participantes aprenderam a realizar tentativas discretas no Experimento I. Os grupos que realizaram inicialmente os módulos de Identificação de Erros e Observação da Correção apresentaram melhor desempenho inicial, entretanto foi necessário que a maioria dos participantes realizasse dois ou mais módulos para desempenhar com 100% de acerto. As folhas-resumo contribuiram para o desempenho dos participantes, entretanto demonstraram ser insuficientes para que a aprendizagem de tentativas discretas, quando apresentadas de forma isolada / The goal of the current study was to analyse the efficacy of different components on a computer-based-tutorial on the performance of the application of discrete trials. A replication of Faggianis study (2014) was performed. The present research was conducted with eight undergraduate psychology students from one public college (Experiment I) and two other undergraduate students (Experiment II). The participants were exposed to a computer-based-tutorial containing animations, video-modeling and teorical teaching, with the objective of teaching on how to implement discrete trials of matching to sample and motor imitation. On Experiment I, the participants were divided in four groups and exposed to four experimental conditions (teorical teaching, video modelling, observation of correction and error identification), in different orders. The order in which the experimental conditions were presented were randomized between groups of participants, so it was possible to evaluate the efficiency of each condition in teaching discrete trials. After each experimental condition, the performance of the participant was evaluated in a test with the experimenter acting as a child with autism. When the participant fulfilled the 100% correct response criterion, he was conducted to a follow-up phase. If the criteria was not met after the tutorial, the participant performed a presential teaching phase. A multiple baseline design was used in each group. During procedure, the participants were not taught on how to implement motor imitation trials, however they were allowed to read a summary sheet containing steps on how to perform matching to sample and motor imitation trials before each test. The Experiment II evaluated the effect of the summary sheet containing components of the discrete trial on the performance of two participants. The results showed that seven of eight participants learned how to perform discrete trials of matching in Experiment I. The groups that initially performed the Error Identification and Observation of Correction modules presented better initial performance, however, it was necessary for most participants to perform two or more modules to perform with 100% performance. The summary sheets contributed to the performance of the participants, however they proved to be insufficient for the learning of discrete trials, when presented without the modules

<p>One of the most important aspects of music performance is the expression of emotions, yet research has suggested that this skill is neglected in music education. The aim of this thesis was thus to develop and test a novel and empirically-based approach to teaching emotional expression in music performance.</p><p>Study I explored the nature of instrumental teaching in its natural context, with a focus on emotional expression. Although there were individual differences among teachers, a common feature was a lack of clear goals, specific tasks, systematic teaching patterns, and informative feedback.</p><p>Study II presented and tested a computer program that analyzes music performances and offers informative feedback, including specific suggestions on how to enhance the emotional expression. Performers were randomly assigned to one of three conditions: (1) feedback from the computer program, (2) feedback from music teachers, and (3) repetition without feedback. The results indicated the greatest improvements in communication accuracy for the computer feedback group, but although the computer program was rated as easy to understand and use, performers did not want to use it in the future.</p><p>Study III explored whether the negative views towards the computer program were due to negative attitudes towards computers or a dislike of the characteristics of the actual feedback contents. Results from a deception experiment revealed that the mere belief that the feedback derived from a teacher yielded higher quality ratings, but so did also feedback that did indeed derive from a teacher. The latter feedback was perceived as more detailed.</p><p>The thesis shows that it is possible for performers to improve their abilities to express emotions through computer-assisted teaching, but suggests that the feedback may benefit from including human-like aspects such as encouragement, examples, and explanations in order to make it more attractive in the eyes of its potential users.</p>

One of the most important aspects of music performance is the expression of emotions, yet research has suggested that this skill is neglected in music education. The aim of this thesis was thus to develop and test a novel and empirically-based approach to teaching emotional expression in music performance. Study I explored the nature of instrumental teaching in its natural context, with a focus on emotional expression. Although there were individual differences among teachers, a common feature was a lack of clear goals, specific tasks, systematic teaching patterns, and informative feedback. Study II presented and tested a computer program that analyzes music performances and offers informative feedback, including specific suggestions on how to enhance the emotional expression. Performers were randomly assigned to one of three conditions: (1) feedback from the computer program, (2) feedback from music teachers, and (3) repetition without feedback. The results indicated the greatest improvements in communication accuracy for the computer feedback group, but although the computer program was rated as easy to understand and use, performers did not want to use it in the future. Study III explored whether the negative views towards the computer program were due to negative attitudes towards computers or a dislike of the characteristics of the actual feedback contents. Results from a deception experiment revealed that the mere belief that the feedback derived from a teacher yielded higher quality ratings, but so did also feedback that did indeed derive from a teacher. The latter feedback was perceived as more detailed. The thesis shows that it is possible for performers to improve their abilities to express emotions through computer-assisted teaching, but suggests that the feedback may benefit from including human-like aspects such as encouragement, examples, and explanations in order to make it more attractive in the eyes of its potential users.

Le cancer de la prostate est le premier cancer en fréquence et la 3ème cause de mortalité chez l’homme en France, enjeu majeur de santé publique avec environ 50 000 nouveaux cas diagnostiqués par an. Son diagnostic est suspecté devant un toucher rectal anormal ou une élévation du taux de l’antigène spécifique prostatique (PSA). Les biopsies prostatiques randomisées, écho-guidées, sont actuellement recommandées en première intention pour confirmer le diagnostic et définir la localisation, le volume, et l’agressivité tumorale par le score de Gleason. Les difficultés de l’enseignement du geste de biopsie prostatique par compagnonnage, sans retour réellement quantifié sur la répartition des biopsies, sont une des explications du manque de précision des biopsies.C’est dans ce contexte qu’a été développé le simulateur Biopsym, environnement pédagogique permettant l’enseignement des biopsies prostatiques à l’aide de 7 exercices et d’un module simulant une série de 12 biopsies randomisées. Plusieurs niveaux d’assistance et un retour sur les performances réalisées par l’apprenant sont proposés. Une première étude avait permis de valider l’apparence et le contenu du simulateur, mais sa capacité à discriminer experts et novices (construit) n’avait pu être mise en évidence notamment en raison d’un manque de réalisme. Au cours de cette thèse, 2 nouvelles études de validation ont donc été réalisées sur une nouvelle version du simulateur. La première a permis d’en valider le construit. La seconde a permis de valider le transfert des compétences, c’est à dire la capacité des étudiants à reproduire les compétences acquises sur le simulateur en situation réelle. / Prostate cancer is the most common malignancy and the 3rd cause of death among men in France. It is a major public health problem with around 50 000 new cases diagnosed each year. The diagnosis is suspected based on an abnormal digital rectal examination or an increase in the prostatic specific antigen level (PSA). Systematic, randomized, ultrasound-guided prostate biopsies are currently recommended first-line to confirm the diagnosis and define the tumor location, volume, and aggressiveness using the Gleason grading system. The conventional training method, based on mentoring, without quantitative feedback on the distribution of the biopsies, has limitations which can partly explain the lack of precision offered by systematic prostate biopsies.The Biopsym simulator was designed in this context to enhance prostate biopsy teaching through 7 exercises and a module replicating the performance of a 12-core systematic biopsy scheme. Several levels of assistance can be offered and a performance feedback is provided. A first validation study allowed to validate face, content and reliability of the simulator, but failed to prove its ability to discriminate between experts and novices (construct validity), in part due to a lack of realism. Two new validation studies on the new version of the simulator were set up during this thesis. The first one allowed for validation of the construct. The second one was able to demonstrate the transfer of skills acquired on the simulator under real-life conditions.

The problem with which this study is concerned is that of comparing the results of teaching community college students enrolled in a transferable mathematics sequence for business and economics majors by a computer-aided instructional program and by the traditional lecture method. In order to effectively resolve this problem, an A Programming Language System 360 (APL/360)-aided instructional program was developed and an experimental study was conducted. The APL/360-aided instructional program consisted of three sets of materials.: a manuscript on APL/360, a list of APL programs defining operators relevant to a computer-aided study of calculus, and a collection of problems based on these programs and calculus concepts. The subjects for the experiment were forty-four students enrolled in three sections of Mathematics 112 at Mountain View College of the Dallas County Community College District. The control group, students taught by the traditional lecture method, consisted of twenty-one students. The experimental group, students taught by the APL/360-aided instructional program, consisted of twenty-three students. The same instructor taught all students. The essential difference in the two teaching methods was the use of the computer as a teaching-learning aid in the computer-aided instructional program. The computer was a course supplement to classroom instruction and aided students in obtaining insight into the nature of mathematical concepts as well as serving as a computational aid.

Au collège, en France, l’apprentissage des usages de l’ordinateur désormais piloté par la certification du B2i (Brevet Informatique et Internet) mais sans formation clairement identifiée, est en filigrane d’usages scolaires multiples souvent distincts des usages non scolaires. Chaque collégien est alors au centre d’une tension entre entre les univers d’usage apparemment inconciliables de la sphère scolaire et de sa sphère privée. Sans guidage ni étayage, il se livre à une sorte de butinage numérique, sans pouvoir transférer les acquisitions qu’il réalise dans chacune des sphères. Le problème didactique que cette recherche cherche à résoudre consiste à identifier et à caractériser des éléments et structures propices à l’émergence d’une cohérence à la globalité des rencontres avec les ordinateurs ou systèmes informatisées et des activités numériques du jeune. dans cette perspective, une première analyse propose une possible organisation scolaire qui tiendrait compte de toutes les activités du collégien, sans exception. Une seconde analyse consiste à objectiver ses rencontres numériques pour qu’elles constituent un objet d’étude pertinent. Enfin, sont examinés des éléments structurants communs, porteur de cohérence. Cette triple investigation permet de proposer un cadre d’interprétation et d’analyse comme outil d’intelligibilité du référent empirique constitué par toutes les rencontres. Cet outil pour l’enseignement est organisé par les tâches, leur technicité… Pour mettre à l’épreuve cette suggestion, une série d’enquêtes a été menée auprès de 203 élèves d’un même établissement. Les usages des outils informatisés ont été repérés ainsi que les conditions de l’opérationalisation de la proposition de cette recherche. Les résultats révèlent qu’il est possible d’adapter l’outil conceptuel d’interprétation des rencontres afin d’aider l’élève à construire, à l’échelle d’un curriculum, son propre itinéraire balisé par des étapes structurantes collectives. / In France, at middle school level, teaching for the uses of computer is now driven by the B2i certification (Brevet Informatique et Internet). Meanwhile, it doesn’t exist clearly identified training. So, each pupil stand in the center of tension between two worlds of uses from scholar sphere and the private sphere, that do not seem to go together. Without guidance or support they engage in a sort of digital gathering, without being able to transfer what they acquire in each sphere. The didactic issue that this research aims at solving is to identify and characterise components and structures ideal for the emergence of a consistency in all the digital practices of the pupils. To do that, a first study is conducted on a possible school organisation that would take into account all the activities of the pupils, without any exception. A second one is to objectivise their digital encounters so that they form a relevant object of study. Finally these two studies are challenged in order to reveal common, coherent structural elements. This threefold investigation enables to offer a framework for interpretation and analysis as a tool for the understandability of the empirical referent comprising every encounter. In order to test this study a series of surveys was conducted among 215 pupils attending the same school. Uses of pupils were identified, as well as the terms of the operationalisation of what this research suggests. Results show that the conceptual tool of the interpretation of the encounters can be adapted in order to help pupils build – at curriculum scale – their own path controlled by structuring and collective steps.

O uso de fóruns eletrônicos como atividade complementar aos programas de formação continuada de professores tem se tornado cada vez mais freqüente com a disseminação das Tecnologias da Informação e Comunicação. Este estudo analisa as estratégias de domínio e apropriação do fórum eletrônico por professores, a partir da análise de interações discursivas na comunidade virtual do programa Educar na Sociedade da Informação, da Universidade de São Paulo. Investigamos também a forma como essa interlocução contribui para a identificação dos sentidos do uso dessas mesmas tecnologias na educação escolar. Observamos nas mensagens as marcas das transformações geradas no processo de comunicação, a partir de peculiaridades dessa tecnologia, como assincronia, comunicação multipolar, suspensão do contexto espacial, utilização da escrita, suporte hipertextual, dependência da infra-estrutura de suporte e equipamentos para acesso. Os referenciais dos estudos socioculturais e da teoria da ação mediada estão na base de nossa metodologia de análise. O conceito de ferramenta cultural, proposto por Lev S. Vigotski e aprofundado por James Wertsch, nos auxilia a verificar as diferentes maneiras encontradas pelos professores para transpor as dificuldades dessa nova situação, como a necessidade de construção contínua de contexto, a criação de identidade da comunidade de interlocução, o convívio com uma temporalidade diferenciada, entre outras. A identificação dos gêneros dos discursos, das diferentes vozes e dos elos entre os enunciados nos permite investigar os contornos das relações dialógicas presentes no fórum, conforme definidas por Mikhail Bakhtin. / Asynchronous discussion groups have been increasingly used as supplementary activity in teacher training programs since the spread of Information and Communication Technologies in society. Through the analysis of discursive interactions at the \"Educar na Sociedade da Informação\" virtual community, a project at University of São Paulo, this research focuses on teachers\' strategies of mastery and appropriation of these technologies. It investigates how the dialogue inside this discussion group helps teachers to find meaning to the changes that may arrive in their everyday practice at school. Messages originated in the virtual community are used to track traces of change in the communication process which derive from the specificity of the internet. A sociocultural approach and mediated action theory provide the theoretical framework for our methodology. Lev S. Vygotsky\'s concept of cultural tools, revised by James Wertsch, helps us verify the ways teachers find to face this new context. Identifying common speech genres, the mobilization of different voices and the connections between utterances in the discussion group lead us to the origin of the dialogic relationships as defined by Mikhail Bakhtin.

A Terapia ABA é a forma de tratar indivíduos autistas que tem apresentado melhores resultados. O arranjo de ensino mais utilizado é a tentativa discreta, que tem sido ensinada a profissionais por meio do Behavioral Skills Training, um pacote de ensino presencial. O ensino computadorizado tem sido estudado como uma alternativa por ser mais econômico. O objetivo do presente estudo foi investigar o efeito de diferentes componentes de um tutorial computadorizado, ECoTed, sobre o desempenho dos participantes na realização de tentativas discretas de emparelhamento de identidade e imitação motora. Foram realizados três experimentos. No Experimento I, seis estudantes de Psicologia foram submetidos a um tutorial com quatro condições experimentais, ou tipos de ensino: ensino teórico, vídeo-modelação, observação de correção, identificação de erros. Após a Linha de Base, os participantes passaram por ensino teórico. Depois, foram divididos em três Grupos; cada Grupo passou pelas condições experimentais restantes em ordens diferentes. Se no teste realizado após cada condição o participante atingisse o critério de 100% de acertos, ia para o follow up; caso não cumprisse o critério após o tutorial, era ensinado presencialmente. Os dados foram coletados com o participante realizando tentativas discretas com um ator. Foi realizado um delineamento de linha de base múltipla em cada Grupo. A imitação motora não era ensinada; no entanto, antes de cada teste os participantes estudavam folhas-resumo que listavam os passos de realização dos dois tipos de tentativas discretas. Cinco participantes obtiveram mais de 90% de acertos após ensino teórico e 100% de acertos nos dois tipos de tentativa discreta após as outras condições. Os resultados foram mantidos no follow up. Na literatura, os participantes atingiam 90% de acertos após vídeo-modelação; no presente experimento alcançaram esses resultados apenas com ensino teórico. Para verificar se a escolaridade foi relevante nos resultados, o Experimento II foi realizado. Um participante não universitário e não formado passou pelas condições experimentais na mesma ordem do Grupo 1 do Experimento I. Seus resultados foram semelhantes aos dos participantes do primeiro experimento. O Experimento III foi realizado para investigar a efetividade das animações do ensino teórico. Dois participantes foram submetidos às seguintes condições: ensino teórico sem animações, ensino teórico e vídeo-modelação. Ambos os participantes obtiveram 80% de acertos em emparelhamento de identidade após o ensino sem animações, indicando que esta variável não foi relevante. Oito dos nove participantes dos três experimentos aprenderam a realizar os dois tipos de tentativas discretas após o ECoTed, sugerindo sua efetividade. Sendo que esses participantes obtiveram mais de 80% de acertos após ensino teórico, não foi possível avaliar a efetividade dos outros tipos de ensino. Os resultados após ensino teórico podem estar ligados a uma possível menor exigência ao comportamento dos participantes neste experimento em relação aos demais. A organização do ensino teórico, em que os conceitos eram definidos simultaneamente à demonstração de sua aplicação, pode ter produzido os resultados obtidos. Novos estudos podem investigar a efetividade do ECoTed com pais de crianças autistas e o desempenho dos participantes ao ensinarem diretamente crianças autistas / ABA Therapy is the treatment for autistic people that has been presenting the best results. The most commonly used teaching arrangement is the discrete trial, which has been taught to professionals through the Behavioral Skills Training, a teacher-dependent package. Computer-based teaching has been studied as an alternative because it is more affordable. The goal of the present study was to investigate the effect of different components of a computer-based tutorial, ECoTed, on the performance of participants in the implementation of discrete trials of identity matching and motor imitation. Three experiments were conducted. In Experiment I, six Psychology students were exposed to a tutorial with four experimental conditions, or kinds of teaching: theoretical teaching, video-modeling, observation of corrections and error identification. After the baseline, the participants went through theoretical teaching. Then, they were divided in three groups; each of them went through the remaining conditions in different orders. If the participant fulfilled the 100% correct responses criterion in any of the tests that took place after each condition, s/he was conducted to the follow up phase; if the criterion was not reached after the tutorial, the participant was directly taught by the experimenter. All the data were collected in a setting in which the participant implemented discrete trials with an actor. A multiple baseline design was used in each group. Motor imitation was not taught; however, before each test the participants were allowed to study a summary sheet, which listed all the steps for the implementation of both kinds of the discrete trials. Five participants had more than 90% correct responses after theoretical teaching and 100% correct responses after the other experimental conditions. Results were similar in the follow up. In other studies, participants reached 90% of correct responses after having been through video-modeling; in the present study, participants reached that result after theoretical teaching only. In order to verify if the education level was relevant, Experiment II was conducted. A non-university and non-graduate participant went through the same conditions as the participants from Group 1 of Experiment I. His results were similar to the performance of the participants of the first experiment. Experiment III was conducted to investigate the effectiveness of of theoretical teaching animations. Two participants were exposed to the following conditions: theoretical teaching without animation, theoretical teaching and video-modeling. Both participants had more than 80% correct responses in the identity matching task after theoretical teaching without animation; which suggests that such variable was not relevant. Eight of nine participants of the three experiments learned how to implement both kinds of discrete trials after the ECoTed, which suggests its effectiveness. Given that these participants had more than 80% correct responses after the theoretical teaching, it was not possible to evaluate the effectiveness of the other kinds of teaching. The results after theoretical teaching can be linked to a lower demand on the behavior of participants in comparison to other studies. Theoretical teaching organization, in which the concepts were defined while its application was shown, might have produced the results. New studies might investigate the effectiveness of ECoTed with parents of autistic children and the performance of participants when teaching autistic children

Este trabalho é um estudo de viabilidade e desenvolvimento de interface baseada em mundo virtual tridimensional para ambientes de aprendizagem. As principais características desta interface são: a) construída em plataforma aberta (OpenSim) compatível com a plataforma proprietária do Second LifeTM (SL); b) mapeamento automático e interoperabilidade entre o LMS (Learning Management System) convencional bidimensional com o mundo virtual tridimensional, permitindo aos usuários acessarem os recursos indistintamente da interface 2D ou 3D. Este estudo teve como preceitos que educadores e designers instrucionais não precisem se preocupar em aprender um novo ambiente, podendo continuar a utilizar o LMS convencional, enquanto que os estudantes interessados podem entrar e participar das atividades on-line, usando essa nova interface. O trabalho deu continuidade ao projeto Ae-3D desenvolvido pelo Interlab-USP, dentro do Programa Tecnologia da Informação no Desenvolvimento da Internet Avançada - Aprendizado Eletrônico (Tidia-Ae) da FAPESP, substituindo-se o SL pela plataforma OpenSim. Como prova de conceito foram implementadas as seguintes funcionalidades/recursos no ambiente OpenSim: login, controle de disciplinas, avisos e chat 3D. / This work is an study of viability and development analysis to apply 3D virtual worlds as alternative access interface for virtual learning environments. The main features of this interface are: a) built on opensource platform (OpenSim) compatible with the proprietary platform of Second LifeTM (SL); b) automatic mapping and interoperability between the conventional Learning Management System (LMS) with bidimensional interface and the 3D virtual world, allowing users access to resources on either ways, through 2D or 3D interface. This study has as precepts that instructional designers and educators would not need to learn to manipulate a new environment and can continue using the conventional LMS, while interested students can enter into the online classes through the 3D Interface. The research described here presents itself as a continuation of Ae-3D project, developed into the program from FAPESP called \"Tecnologia da Informação no Desenvolvimento da Internet Avançada - Aprendizado Eletrônico (Tidia-Ae)\", replacing the SL with the OpenSim platform. A software module was implemented as proof of concept, making available the following functionalities/resources within the OpenSim environment: login, disciplines control, announcements and 3D Chat.

A presente pesquisa está situada na interseção dos estudos sobre trabalho colaborativo, argumentação em ensino de ciências e ambientes virtuais de ensino-aprendizagem. Dessa forma, trata da argumentação colaborativa apoiada por computador em aulas de química. Os objetivos contemplam a construção do ambiente virtual de ensino-aprendizagem eduqui.info, o desenho metodológico de atividades didáticas pautadas na resolução de problemas sociocientíficos apresentados no formato de estudos de caso e a elaboração de quadro analítico capaz de permitir a análise dos dados coletados, no sentido de obter respostas às seguintes questões de investigação: Em que medida as atividades didáticas realizadas no eduqui.info favoreceram a prática da argumentação? Qual a qualidade dos argumentos produzidos pelos alunos a partir da realização de tais atividades? Quais aspectos se mostraram mais relevantes e influentes para a qualidade dos argumentos? A pesquisa foi organizada em dois ciclos de planejamento, execução e análise. Na etapa de planejamento foram elaborados os estudos de caso e o eduqui.info. Na etapa de execução, alunos de um curso de bacharelado em química solucionaram os estudos de caso nas diversas fases de atividades. Inicialmente, individualmente construíram um texto e um diagrama argumentativo com as respostas iniciais ao estudo de caso. Em seguida, organizados em duplas ou em trios, discutiram colaborativamente, encontraram uma solução para o caso e produziram um texto a respeito. Por fim, de forma individual, novo texto e diagrama argumentativo foram gerados. Para a terceira etapa, foi produzido um quadro analítico que subsidiou a análise da qualidade das discussões colaborativas na perspectiva da qualidade da produção e complexidade argumentativa e qualidade e diversidade conceitual. As discussões dos grupos que solucionaram quatro estudos de caso foram investigadas com base no referido quadro. Foi verificada a tendência da produção de mais mensagens no Fórum do eduqui.info do que o mínimo exigido na atividade, o que impactou no nível de produção argumentativa. Sobre a estrutura dos argumentos elaborados nas discussões, expressiva quantidade de componentes argumentativos foi empregada, elevando o nível de complexidade argumentativa das discussões. Com relação ao nível de qualidade conceitual, foi preponderante a adequação dos argumentos científicos, tecnológicos e ambientais, construídos à luz de leis e teorias aceitas pela comunidade científica. Foi também possível indicar os textos e os diagramas iniciais como aspectos que influenciaram fortemente a prática e a qualidade da argumentação nos grupos. / This research is located at the intersection of studies regarding collaborative work, argumentation in science teaching and virtual teaching and learning environments. Thus, it addresses collaborative argumentation supported by computing in chemistry lessons. The objectives include: constructing the eduqui.info virtual teaching and learning environment, the methodological design of didactic activities based on solving socioscientific problems presented as case studies and the establishment of an analytical framework which is able to analyse the data collected in terms of obtaining answers to the following research questions: To what extent did the didactic activities carried out in eduqui.info benefit the practice of argumentation? What is the quality of the arguments put forward by students based on the performance of these activities? Which aspects were most important and influential for the quality of the arguments? The research was organized in two phases of planning, execution and analysis. In the planning stage, the case studies and the eduqui.info were developed. In the execution stage, undergraduate chemistry students solved the case studies in the various phases of activities. Initially, they individually constructed a text and an argumentative diagram using the initial responses to the case study. Afterwards, in pairs or groups of three, they discussed collaboratively, found a solution to the case study and produced a text about it. Finally, individually, a new text and argumentative diagram were produced. For the third stage, an analytical framework was made that subsidized the analysis of the quality of the collaborative discussions in the perspective of production quality and argumentative complexity, as well as quality and conceptual diversity. The discussions in the groups that solved four case studies were investigated based on the aforementioned framework. We observed that there was a tendency to produce more messages in the eduqui.info forum than the minimum required in the activity, which affected the level of argumentative production. Regarding the structure of the arguments developed in the discussions, a significant amount of argumentative components was used, raising the level of argumentative complexity of the discussions. Regarding the level of conceptual quality, the adequacy of the scientific, technological and environmental arguments, constructed considering laws and theories accepted by the scientific community, was preponderant. The texts and initial diagrams were also indicated as aspects that strongly influenced the practice and quality of argumentation in the groups.