Mathematics Study and teaching (Secondary) Mathematical ability 21 Testing 19 Attitudes 12 English language 10 Students 10 Problem solving 9 Mathematics teachers 8 Computer-assisted instruction 7 Science 7 Usage 6 Academic achievement 5 Fractions 4 Interactive multimedia 4 Study and teaching 4 Ability testing 3 Case studies 3 Educational tests and measurements 3 High school students 3 Problems, exercises, etc 3 Activity programs 2 Content area reading 2 Curricula 2 Education effectiveness 2 Geometry 2 Grading and marking (Students) 2 Graphic calculators 2 Mathematical models 2 Outlines, syllabi, etc 2