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This platform is brought to you by the intergeo project, funded under the eContent Plus programme of the European commission and by partners

Paul Libbrecht

Find all blog entries created by Paul Libbrecht. I2geo members can add a comment on any blog entry.

Blog Entries

Eratosthenes Experiment

How do you measure the earth's circumference?

Simply using the sun, a stick, similar triangles, and… communication.

Eratosthenes did it centuries ago. It possible to do that with pupils next Friday, March 21st.

To this end: register on, find a partner school, go out and measure.


JSXGraph @ MathFuture - meet the new DGS

The emerging Dynamic Geometry System JSXgraph will be presented online in the DGS Series of MathFuture.

… next Wednesday, Aug 10th, at 20:00 CET (2:00 PM EST, or… world-time) over Elluminate's LearnCentral.

Join us to discuss the emergence of this new dynamic geometry system which dedicated to the web, being purely made in JavaScript.


see you at i2geo conference

We're all getting ready for the the i2geo conference, next week in Hluboká nad Vltavou (in the Czech Republic).

The programme is quite exciting:

  • from...


Announce : Intergeo platform, GeoSkills ontology, LOM schema

… sharing pedagogical mathematical resources throughout Europe.

The Intergeo European Project ( is pleased to announce a progress milestone of the Intergeo platform together with GeoSkills ontology and a LOM export.


Intergeo demo at Multilingual Information Access TT

We shall demonstrate the multilingual platform i2geo at the MLIA Technology Transfer Day: cross-curriculum, multiple language of news… we're facing an amount of challenges in an innovative way in i2geo!


back from holidays

I am happy to say that back to school is taking place in the project as well with some fresh perspectives on a better show of "showcase pages". An editorial team is being set-up, to watch the contributions, and to maintain the featured resources, the news items, and the featured groups.


All traces converted

The first steps phase concluded and delivered references to more than 3000 constructions available online. They are still in i2geo.