Science and Education Publishing American Journal of Educational Research 2327-6150 4 5 2016 4 9 The Influence of Mathematical Communication on Students' Mathematics Performance and Anxiety 378 382 EN Laila S. Lomibao Mindanao University of Science and Technology, Lapasan, Cagayan de Oro City, Philippines Charita A. Luna Rhoda A. Namoco EDUCATION2016453 10.12691/education-4-5-3 2015 11 24 2016 3 11 2016 4 7 Challenging students to communicate both orally and in writing in mathematics class help deepen their conceptual understanding, improve mathematics performance and reduce anxiety towards mathematics. This study was undertaken to determine the effect of mathematical communication on the mathematics performance and anxiety of high school students in Bulua National High School. Pretest-posttest quasi-experimental control group and qualitative research design were employed. Interviews were also done to verify responses for triangulation. Results of the analysis revealed that the students exposed to mathematical communication approach have significantly higher achievement, conceptual understanding and significantly reduced anxiety compared to the Dynamic Learning Program (DLP) approach. Hence, mathematical communication is effective in improving students' achievement, conceptual understanding, and reducing anxiety.