In order to achieve learning objectives optimally, learning is designed with attention to
students' learning obstacles. The purpose of this research was to analyze the obstacles of …

This study intends to investigate how students' understanding of ratio and proportion
concept indicates epistemological obstacles. It was part of Didactical Design Research …

The ratio and proportion is one of the basic concepts in mathematics. This concept is not
only used to solve problems in mathematics but also in other disciplines and in daily lives …

This study aims to investigate students' prior knowledge as an obstacle when learning ratio
and proportion concept. The study uses an interpretive paradigm which is part of Didactical …

Proportion problems are problems that are often found in real life. For that, we need to be
able to solve problems related to proportion. But some of us make the mistake of solving …

Ratio and proportion are mathematics topics that are learned in elementary school. In the
learning process, teachers often found students who have difficulties in learning these …

The purpose of this study is to describe the process of students' proportional reasoning in
solving missing value problem. Therefore, this study classified as descriptive qualitative …

Pre-service teachers need a good understanding of proportion concept so that later they can
become teachers who can understand the concepts of mathematics to pre-service teachers …

This research based on the students' difficulty in solving problem in triangle and
quadrilateral topic. The difficulties can be identified from the mistakes made by students …

Often teachers provided examples and exercised to students with regard to comparative
problems consisting of one quantity. In this study, the researchers gave the problem of …