We present there, the co-operative works done since several years, for building e-learning tools for slope stability and underground works. The aim of these tools is continued teaching, that is to say, that we don’t deal with elementary theories, such are continuum mechanics or soil mechanics, but we suppose a sufficient background for the reader, and so we can speak immediately of ground works. With this concept, the main difficulty is the numerical illustration of methods for the immediate identification by the reader of the main parameter among all parameters used by the method. These e-learning tools, called DIDACTU for tunnels and DIDACPENTE for slopes, will evolve in a next future by completing the missing scopes as the chapters Investigations and Materials that will be written. A larger cooperation is welcome. DIDACTU and DIDACTPENTE are reachable at: www.solem.ch or http: //lita/gce.ucl.ac.be/~kbt.