The Inter2Geo project has released final versions of deliverables on an educational ontology for geometric competencies and on the metadata format it will adopt in the future. Quotes from the abstracts:

The internationalized ontology of the Intergeo Project is called GeoSkills, it is the basis for the annotations and search of interactive geometry constructions that cross the borders of national and regional curricula of Europe. This ontology is realized in the Web Ontology Language and is available from: http://i2geo.net/ontologies/dev/GeoSkills.owl. It is made available under the Apache Public License.

This report describes the metadata schema which the Intergeo project will be using as basis for the annotations of learning resources in its platform dedicated to the sharing of interactive geometry constructions and related resources. The metadata schema is an application profile of the widespread Learning Objects Metadata standard of IEEE which specifies a set of fields, its meaning for the general purpose of tagging learning resources, as well as an XML specification to encode it. Our specification extends the LOM specification and its XML schema binding which provides approaches towards interoperability with learning management systems and with other learning objects’ publications on the web.

For more details, check the documents Internationalised Ontology (GB/F/D), May 2008 and Final Metadata Specification, Jun 2008.