GeoGebraTAO: Geometry Learning using a Dynamic Adaptive ICT-Enhanced Environment to Promote String Differentiation of Children's Individual Pathways

Scientific Conference (2020, November 12)

In our project, we investigate the scientific validity of a specific self-built Adaptive Learning Tool in the field of dynamic geometry with a particular focus on the individual learning pathways of a ... [more ▼]

In our project, we investigate the scientific validity of a specific self-built Adaptive Learning Tool in the field of dynamic geometry with a particular focus on the individual learning pathways of a highly diverse student population. 164 children of Luxembourg elementary schools, aged between 10 and 13 years, acted as test-group and explored elementary geometric concepts in a sequence of learning assignments, created with the dynamic mathematics system GeoGebra integrated into the computer-assisted testing framework TAO. They actively built new knowledge in an autonomous way and at their own pace with only minor support interventions of their teacher. Based on easily exploitable data, collected within a sequence of exploratory learning assignments, the GeoGebraTAO tool analyses the answers provided by the child and performs a diagnostic of the child’s competencies in geometry. With respect to this outcome, the tool manages to identify children struggling with geometry concepts and subsequently proposes a differentiated individual pathway through scaffolding and feedback practices. Short videoclips aim at helping the children to better understand any task in case of need and can be watched voluntarily. Furthermore, a spaced repetition feature is another highly useful component. Pre- and post-test results show that the test-group, working with GeoGebraTAO, and a parallel working control-group, following a traditional paper-and-pencil geometry course, increased their geometry skills and knowledge through the training program; the test-group performed even better in items related to dynamic geometry. In addition, a more precise analysis within clusters, based on similar performances in both pre- and post-tests and the child’s progress within GeoGebraTAO activities, provides evidence of some common ways of working with our dynamic geometry tool, leading to overall improvement at an individualized level. [less ▲]

GeoGebraTAO, validation of an adaptive learning environment of dynamic geometry. Source of a differentiation individual pathway of the student?

Scientific Conference (2016, July 26)

In this PhD project, about 250 Luxembourgish children of 10-12 years explore elementary geometric concepts in a sequence of learning activities, created with the dynamic mathematics system GeoGebra ... [more ▼]

In this PhD project, about 250 Luxembourgish children of 10-12 years explore elementary geometric concepts in a sequence of learning activities, created with the dynamic mathematics system GeoGebra integrated into the computer-assisted testing framework TAO. The children, who are active in their learning process, are allowed to build new knowledge in an autonomous way and at their own pace. By means of a snapshot of the stimulus containing useful, easily exploitable data, the computer, a diagnostic tool of the competencies of the children in geometry, interprets the answer offered by the child, and based on this answer, gives relaunch instruction to go off to further explore the concepts. So children with special needs are identified and a differentiation individual pathway is inferred through scaffolding or feedback practices. Comparing the obtained results of a pretest and a posttest will allow us to assess the gained knowledge of the children. [less ▲]

GeoGebraTAO, validation of an Adaptive Learning Environment of dynamic geometry. Source of a differentiation individual pathway of the student?

Poster (2015, November 24)

In this PhD project, about 250 luxembourgish children of 10-12 years explore elementary geometric concepts in a sequence of learning activities, created with the dynamic mathematics system GeoGebra ... [more ▼]

In this PhD project, about 250 luxembourgish children of 10-12 years explore elementary geometric concepts in a sequence of learning activities, created with the dynamic mathematics system GeoGebra integrated into the computer-assisted testing framework TAO. The children, who are active in their learning process, are allowed to build new knowledge in an autonomous way and at their own pace. By means of a snapshot of the stimulus containing useful, easily exploitable data, the computer, a diagnostic tool of the competencies of the children in geometry, interprets the answer offered by the child, and based on this answer, gives relaunch instructions to go off to further explore the concepts. So children with special needs are identified and a differentiation individual pathway is inferred through scaffolding or feedback practices. Comparing the obtained results of a pretest and a posttest will allow us to assess the gained knowledge of the children. [less ▲]

L'évaluation des compétences scientifiques au 21eme siècle : cadre conceptuel et prototypes pour une évaluation transformée-par-ordinateur

in Actes du 24e colloque international de l'ADMEE-Europe (2012)

En parallèle à l’évolution récente de l’enseignement des sciences (vers des modes d’enseignement basée sur la découverte guidée ou autonome), on observe une course aux nouvelles méthodes d’évaluation des ... [more ▼]

En parallèle à l’évolution récente de l’enseignement des sciences (vers des modes d’enseignement basée sur la découverte guidée ou autonome), on observe une course aux nouvelles méthodes d’évaluation des compétences scientifiques. Nous proposons ici un cadre conceptuel que nous avons développé et que nous utilisons actuellement pour guider le développement d’un environnement informatique d’apprentissage et d’évaluation intégré, qui pourra être utilisé (1) pour offrir aux apprenants une large panoplie de situations d’apprentissage relativement authentiques, implémentant l’ensemble des activités de l’investigation scientifique et (2) pour évaluer leurs connaissances du processus d’investigation scientifique, pour évaluer leurs compétences « en action » et pour évaluer comment ils appliquent leurs connaissances d’un domaine scientifique donné. Ce cadre conceptuel sera illustré à l’aide de prototypes d’items d’évaluation développés pour des ordinateurs mobiles à écran tactile. [less ▲]

The Genetics Lab: a computer-based test to assess students' complex problem solving abilities

Software (2012)

The Genetics Lab. Acceptance and psychometric characteristics of a computer-based microworld to assess Complex Problem Solving

in Psychological Test and Assessment Modeling (2012), 54

Computer-based problem solving scenarios or “microworlds” are contemporary assessment instruments frequently used to assess students’ complex problem solving behavior – a key aspect of today’s educational ... [more ▼]

Computer-based problem solving scenarios or “microworlds” are contemporary assessment instruments frequently used to assess students’ complex problem solving behavior – a key aspect of today’s educational curricula and assessment frameworks. Surprisingly, almost nothing is known about their (1) acceptance or (2) psychometric characteristics in student populations. This article introduces the Genetics Lab (GL), a newly developed microworld, and addresses this lack of empirical data in two studies. Findings from Study 1, with a sample of 61 ninth graders, show that acceptance of the GL was high and that the internal consistencies of the scores obtained were satisfactory. In addition, meaningful intercorrelations between the scores supported the instrument’s construct validity. Study 2 drew on data from 79 ninth graders in differing school types. Large to medium correlations with figural and numerical reasoning scores provided evidence for the instrument’s construct validity. In terms of external validity, substantial correlations were found between academic performance and scores on the GL, most of which were higher than those observed between academic performance and the reasoning scales administered. In sum, this research closes an important empirical gap by (1) proving acceptance of the GL and (2) demonstrating satisfactory psychometric properties of its scores in student populations. [less ▲]

The Genetics Lab: An Innovative Tool for Assessment of Intelligence by Mean of Complex Problem Solving

Scientific Conference (2011)

Vers une architecture de testing assisté par ordinateur pour l'évaluation des acquis scolaires dans les systèmes éducatifs orientés sur les résultats

in Blais, Jean-Guy (Ed.) Évaluation des apprentissages et technologies de l’information et de la communication: Enjeux, applications et modèles de mesure (2009)

A web-based system for the evaluation of information processing strategies in the domain of scientific literacy

in XXIX International Congress of Psychology (2008)

Computer Based School System Monitoring with Feedback to Teachers

in Proceedings of World Conference on Educational Multimedia, Hypermedia and Telecommunications 2008 (2008), 2008(1), 5065-5070

Educational multimedia focuses traditionally on the design of computer aided learning environments. Evaluation has to be viewed as an essential part of the learning environment. Beyond opportunities ... [more ▼]

Educational multimedia focuses traditionally on the design of computer aided learning environments. Evaluation has to be viewed as an essential part of the learning environment. Beyond opportunities provided by its computerization (behaviours tracking, richer interactions, etc.), Computer Based Assessment provides teachers a measurement instrument where their students are put together with larger groups of students on the same assessment scale, using a unique competency model. It provides feedback to teachers that enable them to early detect shortcomings of their courses, pedagogical approach. ICT provides in this case a flexible way for the results collection, feedback reporting raising strengths and weaknesses, assurance of anonymity, data privacy. Moreover, it would give decision makers of the educational system information on the educational system steering efficiency. This paper describes ongoing assessment based on the TAO platform (http://www.tao.lu) with feedback to teachers done in Luxembourg. [less ▲]