Educational: Sciences, general science 16 Education 15 Physics 7 Society & culture: general 7 Teacher training 7 Computer science 5 Educational equipment & technology, computer-aided learning (CAL) 5 Other technologies & applied sciences 5 Philosophy 5 Science: general issues 5 Society & social sciences 5 Literature & literary studies 4 Mathematics 4 Mathematics & science 4 Politics & government 4 Social research & statistics 4 Teaching of a specific subject 4 Chemistry 3 Educational strategies & policy 3 Literature: history & criticism 3 Psychology 3 Archaeology 2 Automotive technology & trades 2 Business & management 2 Cultural studies 2 Differential calculus & equations 2 Educational psychology 2 Humanities 2 Information technology: general issues 2 Literary studies: post-colonial literature 2