The two learning materials pages are in the root of the franklin site, i.e. not in any section or subsection and thus outside the navigational structure of the site (kind of orphaned). Also means these two html pages have to be maintained manually, rather than by maintaining the xml data file and then transforming to create the html files.
I've created an xml file in the Home section for french (material pedagogique) and for english (learning materials) and modified the transformation and schema files to generate html pages properly in the home section.
The two files in the root folder, I've added a meta redirect to each to redirect to the appropriate page in the home section of the site.