Study and teaching (Secondary) 120 Science 115 English language 18 Attitudes 15 Students 13 Ability testing 12 Science teachers 11 Usage 10 Academic achievement 9 Evaluation 9 Curricula 8 Mathematics 7 Textbooks 7 Cognitive learning 4 Computer-assisted instruction 4 Physics 4 Rating of 4 Cognition in children 3 Curriculum evaluation 3 Curriculum planning 3 Educational technology 3 Experiments 3 Language transfer (Language learning) 3 Technology 3 Concept learning 2 Critical thinking 2 Education 2 Education, Secondary 2 Government policy 2 High school students 2