Interactive Geometry Exchanged Around the Planet

During the event, we will discuss the inter2geo project aims: making interactive geometry exchangeable and exchanged.


Full recording: voice, text chat, applications, web tour


All Math 2.0 events are free and open to the public. Information about all events in the series is here:

Saturday, September 25th 2010 we will meet in the LearnCentral public Elluminate room at 11am Pacific / 2pm Eastern time. WorldClock for your time zone.


To join:
  • Follow this link:
  • Click "OK" and "Accept" several times as your browser installs the software. When you see Elluminate Session Log-In, enter your name and click the "Login" button
  • You will find yourself in a virtual room. An organizer will be there to greet you, starting about half an hour before the event.
If this is your first Elluminate event, consider coming a few minutes earlier to check out the technology. The room opens half an hour before the event.

About the project

The inter2geo project aims at making interactive geometry exchangeable and exchanged.

The project's platform is an online service used by teachers to share and find interactive geometry resources. It accepts any format or any URL but offers more services for interactive geometry:

  • the construction files can be retrieved and played
  • a preview of the resources can be submitted
  • the resources are tagged with topics, competencies, and educational levels encoded in an internationalized ontology
  • the resources can be reviewed so that the impact on the learning is reported about

This is constructed with an international objective: multiple languages are offered (currently 12) and the annotations are multilingual themselves. Contributors of the world ("curriculum encoders" and "translators") help bringing this dimension.

We shall present the objectives of the project, how far we are, as well as a little demo.

More information about the platform:

Event Hosts

Paul_Libbrecht_FondZeroCoupe.jpgPaul Libbrecht
A mathematician, from the University of Lausanne and UQAM, Paul has been recycled into programming for mathematics on the web. Since 2000 he is in Saarbrücken, Germany, working on the ActiveMath learning environment and, since 2007, for the Inter2geo project. His research interests include information use and re-use for mathematical documents (semantic encodings, clipboards, authoring, sharing) and retrieval with a twist towards engineering for multiple cultures.
Christian Mercat under the action of a group...
Christian Mercat

Professor of math didactics at Université Claude Bernard, Lyon (France), Christian is specialized in Discrete Differential Geometry and in Interactive Geometry. He has worked at University of Montpellier, Technical University of Berlin, University of Melbourne, Tel-Aviv University, and Mittag-Leffler Institute. Christian's PhD is from University of Louis Pasteur, Strasbourg, and he graduated from the École Normale Supérieure de Paris.