Study and teaching 86 Academic achievement 64 Design and construction 54 Teaching 40 Study skills 34 Students 33 Testing 29 Mathematics 28 Data processing 27 Attitudes 24 Education 24 Educational technology 24 Teachers 24 Computer-assisted instruction 23 Optical communications 22 Data transmission systems 19 Fiber optics 19 Training of 16 Aids and devices 14 Computer literacy 14 Study and teaching (Secondary) 14 C (Computer program language) 13 Integrated circuits 13 Air conditioning 12 Automatic control 12 Computer programs 12 Electrical engineering 12 English language 12 Examinations, questions, etc 12 Programmable controllers 12