Students learning obstacles on the topic of triangle based on mathematical understanding ability
Lafita Rahmi, Suhendra, Kartika Yulianti

Departemen Pendidikan Matematika, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung 40154, Indonesia

Abstract

Triangle is one of the most important topic in geometry and used in other topics of learning mathematics. But in fact some students faced obstacles in learning this topic. This study aims to obtain a description of students learning obstacles on the topic of triangle based on each indicator of mathematical understanding ability. This research was qualitative with a case study design. The research subject was given test dealing with triangle that arrange based on indicators of mathematical understanding ability. The test involved 27 students of grade 7th of a junior high school in Padang Pariaman, 10 of which also participated in the interview. The data were analyzed using the stages of data collecting, reducing, and analyzing to get conclusion. The results of this study can be used to design an instructional material to anticipate the learning obstacles that will be faced by students and can improve students mathematical understanding ability on the topic of triangle.

Keywords: Learning Obstacles, Triangle, and Mathematical Understanding Ability

Topic: Mathematics Education