Table-9 demonstrates that at the end of the term, 17 students (100%) made the evaluations correctly. In the evaluations
made at the beginning of the term, 3 students (13%) made the evaluations correctly, and 20 students (87%) made them
wrong. The increase at the end of the term reveals that the process of instruction was sustained effectively.
“Does the subject of problem solving have effect on the students’ mathematical thinking levels?”