Computer Science and Educational Software Design Daniel W New concepts and treatments can 70174 Stuttgart New concepts and treatments can only be achieved by an interdisciplinary approach bringing together expertise and several others Tchounikine argues that these difficulties cannot be solved by building a kind of “general theory” or “general engineering methodology” to be adopted by all actors for all projects: educational software projects may correspond to very different realities Computer scientists face the difficulty of understanding the particular issues and phenomena to be taken into account in educational software projects and of avoiding a naïve technocentered perspective