*Faculty member, Prosperidad National High School, Prosperidad, Agusan del Sur, Philippines
**Ph. D., Chairman, Mathematics Department, College of Science and Technology Education, University of Science and Technology of Southern Philippines
***Ph. D., Professor Emeritus, Department of Mathematical Sciences, University of Science and Technology of Southern Philippines
Online published on 25 June, 2019.
Proof and reasoning are essential mathematical skills in Geometry subject. Engaging in this level of higher order thinking skills, students’ need to develop and learn basic concepts competencies in proving especially in geometry. Students must have a good conceptual understanding of mathematical ideas and theories to have a proper understanding of mathematical proof and proving techniques. This study investigated the effect of students’ error analysis of geometric proofs on their achievement and conceptual understanding. It employed quasi experimental non-equivalent control group design and was conducted at Prosperidad National High School, Prosperidad, Agusan del Surfrom August to October 2016. The participants were the two intact classes of Grade 10 students assigned as experimental and control
Error analysis, Geometric proofs, Achievement, Conceptual understanding
