Study and teaching (Secondary) English language 154 Mathematics 93 Science 77 Study and teaching (Elementary) 62 Malay language 60 Case studies 39 more ... Biology 34 Composition and exercises 33 Study and teaching 33 Social sciences 30 Physical education and training 24 Grammar 21 English literature 20 Foreign speakers 20 Study and teaching (Middle school) 20 Chemistry 19 Problems, exercises, etc 17 Literature 16 Study and teaching (Higher) 16 Training of 16 Language arts (Secondary) 15 Curricula 14 Handbooks, manuals, etc 13 Outlines, syllabi, etc 13 Writing 13 Computer-assisted instruction 12 Evaluation 12 History 12 Rhetoric 12 less ...