The program is free and open to anyone without restrictions; the Center policy enables further dissemination of its material. Lessons, available in pdf format, do not provide internal or external links, which are instead grouped in a specific page.
Each lesson, document and paper included in this website is free of charge and open to anyone. The Center offers also non-exclusive rights to associations and users to reprint, translate, adapt, publish and disseminate Center material
The program offers complete lesson plans for different educational levels for free; many printed publications (some available in Spanish too) can also be downloaded
Lessons do not provide links to internal or external resources, while a rich section of links is available from the main menubar mainly pointing to related institutional and educational websites