ConieD'99 Organisation -- pt. I. Plenary Lectures -- Computers in Education: the Near Future / Manuel Ortega Cantero -- Natural Language Processing in Educational Computer Science / Antonio Vaquero Sanchez -- Educational Web Sites: Some Issues for Evaluation / M. Felisa Verdejo -- pt. II. Papers -- Building a Virtual Learning Environment Using Agents / Alex Abad Rodon, Enric Mor Pera and Francesc Santanach Delisau -- Integration of Simulation of Multimedia in Automatically Generated Internet Courses / Manuel Alfonseca and Juan De Lara -- A Visual Simulation Environment for MIPS Based on VHDL / J.M. Alvarez Llorente, N. Pavon Pulido and J. Ballesteros Rubio -- An Authoring Environment for the SimulNet Educational Platform / L. Anido, M. Llamas and M.J. Fernandez / [and others] -- BabelWin: An environment for learning and monitoring reading and writing skills / Laura Aranda, Santiago Torres and Monica Trella / [et al.] -- An Internet Distance-Learning Operating Model / Jesus G. Boticario and Elena Gaudioso -- Synchronous Drawing Actions in Environments of Collaborative Learning of Design / C. Bravo, M.A. Redondo and J. Bravo / [et al.] -- Interconnecting Courseware Modules via WWW / J.C. Burguillo, L. Anido and J.V. Benlloch / [et al.] -- Adaptive Internet-based learning with the TANGOW system / Rosa Maria Carro, Estrella Pulido and Pilar Rodriguez -- APRISA: A Tool for Teaching the Interconnection of Open Systems / E.M. De La Calzada Cuesta, B. Curto Diego and A.M. Moreno Montero / [et al.] -- Interactive Mathematics Teaching with Mathedu / Fernando Diez and Roberto Moriyon -- Teaching Support Units / Ramon Fabregat Gesa, Jose Luis Marzo Lazaro and Clara Ines Pena De Carrillo -- The Interactive Physics Course on the Internet Problems and Solutions / Angel Franco Garcia -- Task Based Training of Application Users / Federico Garcia Salvador and Roberto Moriyon Salomon -- SUMA Project (Open Murcia University Services) / Antonio Gomez Skarmeta, Pedro Garcia Lopez and Jesus Egea Paya / [et al.] -- Introducing Waves Using Simulations Controlled From Html Files / M. Adelaida Hernandez, Jose M. Zamarro and Ernesto Martin -- Using Bayesian Networks in Computerized Adaptive Tests / E. Millan, M. Trella and J.L. Perez-De-La-Cruz / [et al.] -- XML-based Integration of Hypermedia Design and Component-Based Techniques in the Production of Educational Applications / Antonio Navarro, Jose Luis Sierra and Baltasar Fernandez-Manjon / [et al.] -- Approach to Intelligent Adaptive Testing / Angel Neira, Alfredo Alguero and Jose A.L. Brugos / [et al.] -- Learning Basque in a Distance-Adaptive way / Tomas A. Perez, Ricardo Lopez and Julian Gutierrez / [et al.] -- Collaborative planning for problem solution in distance learning / M.A. Redondo, C. Bravo and J. Bravo / [et al.] -- High Level Design of Web-Based Environments for Distance Education / Miguel Rodriguez-Artacho and M. Felisa Verdejo -- M.A.C.A Hypermedia System for Learning Electronics / A. Salaverria, M.J. Moure and M.D. Valdes / [et al.] -- Computer-Human Learning / Pedro Pablo Sanchez Villalon