References of "Kreis, Yves 50002135"
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See detaili2g Common File Format Draft v2
Hendriks, Maxim; Kortenkamp, Ulrich; Kreis, Yves UL et al

Report (2009)

Detailed reference viewed: 28 (4 UL)
See detailSoftware Development & Online Systems: Extensions
Hohenwarter, Markus; Kreis, Yves UL

Scientific Conference (2009, July 15)

The primary aims of this working group are to exchange ideas/plans for future extensions of GeoGebra and organise its developer community. Current projects include extending the statistics and spreadsheet ... [more ▼]

The primary aims of this working group are to exchange ideas/plans for future extensions of GeoGebra and organise its developer community. Current projects include extending the statistics and spreadsheet capabilities of GeoGebra and improving CAS integration into the software. In addition, some work has been already carried out on the 3D extension of GeoGebra. As an open-source project with a large user base, the future development of GeoGebra will be substantially influenced by the needs and desires of the GeoGebra user community and by the strength and cohesiveness of the GeoGebra developers. The focus areas of this working group include: * Features & Wishlist * Extensions: exploring possible extensions of GeoGebra features like Spreadsheet, CAS, 3D, etc. * Online Systems: integration into online systems like Moodle, Sage, WebWork, etc. * Wishlist & Roadmap: developing and evaluating a wish list for future extensions * Organization * User Community: new website, GeoGebraWiki, material manager * Developer Community: distributing work and managing the open-source developer community * Support * Projects: listing existing projects; developing ideas for research and development projects; * Funding: exploring resources for future developments and supporting developers [less ▲]

Detailed reference viewed: 16 (4 UL)
See detailSoftware Development & Online Systems: CAS
Hohenwarter, Markus; Kreis, Yves UL

Scientific Conference (2009, July 14)

The primary aims of this working group are to exchange ideas/plans for future extensions of GeoGebra and organise its developer community. Current projects include extending the statistics and spreadsheet ... [more ▼]

The primary aims of this working group are to exchange ideas/plans for future extensions of GeoGebra and organise its developer community. Current projects include extending the statistics and spreadsheet capabilities of GeoGebra and improving CAS integration into the software. In addition, some work has been already carried out on the 3D extension of GeoGebra. As an open-source project with a large user base, the future development of GeoGebra will be substantially influenced by the needs and desires of the GeoGebra user community and by the strength and cohesiveness of the GeoGebra developers. The focus areas of this working group include: * Features & Wishlist * Extensions: exploring possible extensions of GeoGebra features like Spreadsheet, CAS, 3D, etc. * Online Systems: integration into online systems like Moodle, Sage, WebWork, etc. * Wishlist & Roadmap: developing and evaluating a wish list for future extensions * Organization * User Community: new website, GeoGebraWiki, material manager * Developer Community: distributing work and managing the open-source developer community * Support * Projects: listing existing projects; developing ideas for research and development projects; * Funding: exploring resources for future developments and supporting developers [less ▲]

Detailed reference viewed: 15 (1 UL)
Peer Reviewed
See detailIntergeo: fostering the use of Dynamic Geometry Software in Europe
Kortenkamp, Ulrich; Abánades, Miguel; Botana, Francisco et al

Scientific Conference (2009, July 13)

Detailed reference viewed: 31 (4 UL)
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See detailGeoGebra 3.2 – The new Spreadsheet View
Kreis, Yves UL; Hohenwarter, Markus; Hohenwarter, Judith

Scientific Conference (2009, July 12)

GeoGebra (www.geogebra.org) is a free, multi-platform, open-source dynamic mathematics software with rapidly growing worldwide popularity. The basic idea of the software is to join dynamic geometry ... [more ▼]

GeoGebra (www.geogebra.org) is a free, multi-platform, open-source dynamic mathematics software with rapidly growing worldwide popularity. The basic idea of the software is to join dynamic geometry, algebra, and calculus, which other packages treat separately, into a single easy-to-use package for learning and teaching mathematics from elementary through university level. So far GeoGebra’s user interface allowed algebraic (i.e. coordinates of points, equations) and graphical (i.e. points, function graphs) representations of mathematical objects. While coordinates and equations were displayed in the algebra view on the left hand side, their graphical representations could be seen in the graphics view on the right hand side. The release version 3.2 (available in April 2009) adds another – third – view: the spreadsheet view. Now various kinds of mathematical objects – not only numbers – can also be put inside spreadsheet cells. All representations of the same object are linked dynamically and adapt automatically to changes made to any of the representations, no matter how they were initially created. This enables users to connect statistical reasoning with other areas of mathematics. In this presentation we will introduce the new view, present some examples and discuss the opportunities it offers for the teaching and learning of mathematics. [less ▲]

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See detailGeoGebraPrim - GeoGebra for Primary School
Kreis, Yves UL; Dording, Carole UL

Scientific Conference (2009, July 11)

The aims of the project are on one hand the improvement of the children’s understanding of the elementary geometric concepts and on the other side a deeper insight in the bond of geometry and algebra. The ... [more ▼]

The aims of the project are on one hand the improvement of the children’s understanding of the elementary geometric concepts and on the other side a deeper insight in the bond of geometry and algebra. The study consists in a pre-/post-test scenario combined with observations of particularly interesting situations. All in all approximately 200 children of 9 years will participate; about half of them will follow a traditional paper/pencil geometry course while the others will be mixing experiences on the computer to the traditional ones. So far the existing Dynamic Geometry System GeoGebra has been adapted to the needs of the primary school through multiple observations of children working with the software. Besides it has been integrated into the TAO (Testing Assisté par Ordinateur – Computer-Assisted Testing) platform that will be used partially for the final test. In this presentation we will give a short overview of the project, explain the educational and technological concepts used and present first results of the study. [less ▲]

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See detailInternational GeoGebra Institute: nurturing a community to assist the integration of the open-source mathematics software GeoGebra into mathematics teaching
Kreis, Yves UL; Lavicza, Zsolt

Scientific Conference (2009, July 06)

GeoGebra is a free open-source dynamic mathematics software that is a versatile tool for visualizing mathematical concepts from elementary through university level. Without any promotion and organised ... [more ▼]

GeoGebra is a free open-source dynamic mathematics software that is a versatile tool for visualizing mathematical concepts from elementary through university level. Without any promotion and organised training GeoGebra has been discovered and used by tens of thousands of enthusiastic teachers and researchers around the world. In the past four years, an extensive self-supporting user community was formed by users of GeoGebra and they share interactive teaching materials on the GeoGebraWiki and support fellow users through the GeoGebraForum. Volunteers from this community have also translated GeoGebra to 42 languages offering great opportunity to use the software in local languages and in multicultural environments. To be able to support such extensive user community, we established the International GeoGebra Institute (IGI). The principle aims of IGI are to develop a platform to offer training and support for teachers and to coordinate research in relation to GeoGebra. During the past year, eight local GeoGebra institutes were established. In this talk, we will share our ideas about IGI and outline the current developments of this project. We hope to nurture a network of people who can contribute to any aspects of GeoGebra based on their interests. [less ▲]

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See detailGeoGebra
Hohenwarter, Markus; Borcherds, Michael; Kreis, Yves UL

Software (2009)

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See detailI2G API Specification
Kortenkamp, Ulrich; Kreis, Yves UL; Libbrecht, Paul et al

Report (2009)

Detailed reference viewed: 24 (1 UL)
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See detailGeoGebra 3.2 - The new Spreadsheet View
Kreis, Yves UL; Hohenwarter, Markus; Hohenwarter, Judith

in Bardini, Caroline; Fortin, Philippe; Oldknow, Adrian (Eds.) et al Proceedings of the 9th International Conference on Technology in Mathematics Teaching (2009)

The release 3.2 of GeoGebra will add another – third – view for mathematical objects: the Spreadsheet View. In this paper we will introduce the new view, present some examples and discuss the ... [more ▼]

The release 3.2 of GeoGebra will add another – third – view for mathematical objects: the Spreadsheet View. In this paper we will introduce the new view, present some examples and discuss the opportunities the new Spreadsheet View will offer for teaching and learning of mathematics. [less ▲]

Detailed reference viewed: 31 (3 UL)
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See detailTeaching with Information and Communication Technologies: Results of a Large Scale Survey
Linckels, Serge UL; Kreis, Yves UL; Reuter, Robert UL et al

in Farally-Semerad, Gail; McRitchie, Karen; Rugg, Beth (Eds.) SIGUCCS '09: Proceedings of the 37th annual ACM SIGUCCS fall conference: communication and collaboration (2009)

On behalf of the Ministry of Education in Luxembourg (Europe), 821 teachers - from primary school to higher education - were questioned in an online survey at the beginning of 2009 about their use of ... [more ▼]

On behalf of the Ministry of Education in Luxembourg (Europe), 821 teachers - from primary school to higher education - were questioned in an online survey at the beginning of 2009 about their use of information and communication technologies (ICT) in education. In this paper, we briefly present the context of the questionnaire and will then focus on its outcomes. The preliminary analysis of the results will mainly focus on the closed questions of the survey and try to answer several fundamental questions related to the availability, as well as to the current and the future usage of ICT in schools. Most of the teachers use ICT in some way in education, but printed documents remain the most popular source of information during class. The main argument listed to use ICT is the increase of students' motivation, while the major concern is the technical hardware dependency or unavailability. Also, an important number of teachers is concerned about the increased preparation time that is in most cases not rewarded. Finally, a vast majority of the teachers is willing to take part in an e-learning training program, probably because they feel unqualified or do not (yet) see the advantage of ICT for their classes. [less ▲]

Detailed reference viewed: 90 (18 UL)
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See detailThe Intergeo File Format in Progress
Abánades, Miguel; Botana, Francisco; Escribano, Jesús et al

in Davenport, James H. (Ed.) Proceedings of the 22nd OpenMath Workshop (2009)

In this paper we describe the ongoing effort to specify a common file format for Interactive or Dynamic Geometry Systems (DGS). Our approach is based on the OpenMath standard, and uses its flexible ... [more ▼]

In this paper we describe the ongoing effort to specify a common file format for Interactive or Dynamic Geometry Systems (DGS). Our approach is based on the OpenMath standard, and uses its flexible extension mechanisms like Content Dictionaries. We discuss the various design decisions, the Content Dictionaries that have been defined, as well as open questions to be resolved. [less ▲]

Detailed reference viewed: 38 (8 UL)
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See detailGeoGebraPrim - GeoGebra for Primary School
Kreis, Yves UL; Dording, Carole UL

in Bardini, Caroline; Fortin, Philippe; Oldknow, Adrian (Eds.) et al Proceedings of the 9th International Conference on Technology in Mathematics Teaching (2009)

The aims of the project are on one hand the improvement of the children’s understanding of the elementary geometric concepts and on the other side a deeper insight in the bond of geometry and algebra. The ... [more ▼]

The aims of the project are on one hand the improvement of the children’s understanding of the elementary geometric concepts and on the other side a deeper insight in the bond of geometry and algebra. The study consists in a pre-/post-test scenario combined with observations of particularly interesting situations. All in all approximately 200 children of 9 years will participate; about half of them will follow a traditional paper/pencil geometry course while the others will be mixing experiences on the computer to the traditional ones. So far the existing Dynamic Geometry System GeoGebra has been adapted to the needs of the primary school through multiple observations of children working with the software. Besides it has been integrated into the TAO (Testing Assisté par Ordinateur – Computer-Assisted Testing) platform that will be used partially for the final test. In this presentation we will give a short overview of the project, explain the educational and technological concepts used and present first results of the study. [less ▲]

Detailed reference viewed: 141 (7 UL)
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See detailUsing the Intergeo Platform for Teaching and Research
Kortenkamp, Ulrich; Dohrmann, Christian; Kreis, Yves UL et al

in Bardini, Caroline; Fortin, Philippe; Oldknow, Adrian (Eds.) et al Proceedings of the 9th International Conference on Technology in Mathematics Teaching (2009)

The main objective of the Intergeo Project (http://i2geo.net) is to make digital content for mathematics teaching in Europe more accessible, usable and exploitable. So far, Intergeo provides an Internet ... [more ▼]

The main objective of the Intergeo Project (http://i2geo.net) is to make digital content for mathematics teaching in Europe more accessible, usable and exploitable. So far, Intergeo provides an Internet platform that offers content in a searchable and metadata-tagged form. In particular, teachers can search for suitable content based on the key concepts and themes of their curriculum. Once found, the content can be used either directly on the web or using the software of choice. Another very important aspect is that all material used in the classroom should adhere to certain pedagogical and mathematical quality standards. Intergeo facilitates the evaluation of material by means of a quality-testing framework that aids teachers and researchers in assessing the educational value of the digital content. The questionnaire used for this can be answered both quickly as well as in depth. In this workshop we will show how to use the platform and how to participate in the project as a user or by becoming an associate partner. Also, we will help software and tool authors to be able to read and write the new standard format for interactive geometry, i2g. [less ▲]

Detailed reference viewed: 37 (9 UL)
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See detailNew perspectives on the use of GeoGebra for improving teaching quality
Kreis, Yves UL

Scientific Conference (2008, October 29)

Detailed reference viewed: 21 (6 UL)
Full Text
See detailCommon File Format v1
Hendriks, Maxim; Kortenkamp, Ulrich; Kreis, Yves UL et al

Report (2008)

Detailed reference viewed: 24 (4 UL)
Peer Reviewed
See detailGeoGebra – free software for dynamic geometry, algebra and calculus
Hohenwarter, Markus; Hohenwarter, Judith; Kreis, Yves UL et al

Poster (2008, July 09)

GeoGebra (www.geogebra.org) is free, multi-platform, open-source dynamic mathematics software with rapidly growing worldwide popularity. The basic idea of the software is to join dynamic geometry, algebra ... [more ▼]

GeoGebra (www.geogebra.org) is free, multi-platform, open-source dynamic mathematics software with rapidly growing worldwide popularity. The basic idea of the software is to join dynamic geometry, algebra, and calculus, which other packages treat separately, into a single easy-to-use package for learning and teaching mathematics from elementary through university level. GeoGebra offers the powerful opportunity for teachers to create interactive online learning environments which have led many teachers to foster experimental and discovery learning for their students. An extensive self-supporting user community shares free interactive teaching materials on the GeoGebraWiki, supports fellow users through a user forum, and has translated GeoGebra to 36 languages. In this poster presentation, we will both present applications of the software and plans for its future development, as well as raise some of the implications of technological developments such as GeoGebra for the pre-service education and inservice professional development of teachers of mathematics. [less ▲]

Detailed reference viewed: 30 (4 UL)