This is a very valuable educational resource, for teachers and students; therefore the entire site is free and open to the public, including its interactive areas. Users can access the entire content for free, including several audio and video files.
Aiming at teachers and students of any level, the entire site is open to the public. Users can join the community for free, participate in discussions and other interactive areas. Some items can also be purchased online through a shopping cart
A great amount of material is freely available, including content posted on specific partner websites
Links are widely used here to provide easy access to both internal resources (along with window menus and other options) and to the network external pages for further inquiries