Charita A. Luna^1,, Sergio R. Canoy Jr.²

This study reports on the result of the analysis of some graduate mathematics students of University of Science and Technology of Southern Philippines and Mindanao State University-Iligan Institute of Technology in writing or constructing mathematical proofs. The study used the quantitative and qualitative method of research. Results revealed that the teachers who finished their undergraduate degree in pure mathematics perform very well in writing mathematical proofs and females are likely to find difficulty in doing proof than males. Poor experience in writing proof in high school, and college, poor foundation in logic , being non-pure mathematic major and poor understanding of mathematical concepts are some of the causes of difficulties in writing mathematical proofs.

innovative assessment method, teacher¡¯s difficulties, mathematical proofs, mathematics education, mathematics teacher