The papers in this report represent the imagination, analysis, and experiences of many people involved in recent curricular studies in secondary school mathematics. It differs from reports that seek broad agreement on conservative, traditional curricula, representing instead the point of view of those working with emerging electronic technology that this technology offers striking opportunities and challenges to reshape content and pedagogy. The introductory chapter considers the potential impact of the new information technologies in relation to mathematics, setting the stage for the other papers. These address the impact of computing on algebra, geometry, calculus, and discrete mathematics and algorithmic methods. A sixth chapter considers prospects and strategies for change in school mathematics. A bibliography is included.