1) Presentation of intervention at the Prague Conference, Czech Republic, 3 and 4 October 2014, entitled "Introducing some sustainable notions to students of Mathematics using a nested cycles model" by Sylvain Barré and Salim Lardjane, RCE Brittany, University of Atlantic Brittany, France, on the following websites :

CNRS Webside : https://hal.archives-ouvertes.fr/hal-01098518

Dear Jos, dear colleagues,

I am answering to your mail as a founding member of ERA and as someone who is interested in cooperation.

Best wishes

detlev.

Please find enclosed our ‘Invitation for Cooperation’ of RCE’s on the continental level. An invitation we have been working on past month in order to pick up the constructive cooperation of RCEs in Europe now that the GAP is ready to take off and the Okayama Declaration has been published . In this phase, awaiting your ideas and proposals, this is no more than a well meant initiative to establish more togetherness of the RCE’s themselves. From thereon to further consider what the whole group wants to work on, propose, discuss, organize or not, plan, do.

The Global RCE Service Centre has prepared the Guiding Principles for the RCE Community in close consultation with Ubuntu Committee members as follows.