Distance education Computer-assisted instruction 132 Educational technology 81 Internet in education 56 Open learning 45 Education, Higher 34 Computer network resources 29 Design 24 Education 23 Telecommunication in education 22 Web-based instruction 22 Effect of technological innovations on 19 Instructional systems 18 Social aspects 17 Data processing 15 Teaching 15 World Wide Web 14 Case studies 13 Internet in higher education 11 Mobile communication systems in education 11 Cross-cultural studies 10 Continuing education 9 Information technology 9 Aids and devices 8 Evaluation 7 Teachers 7 University extension 7 College teaching 6 Study skills 6 Training of 6