Identification of Graph Thinking in Solving Mathematical Problems Naturally

This study attempts to describe characteristics of graph thinking in solving a mathematical problem. Three students at the 10th grade senior-high schools were involved as subject. The data was collected from result an optimization problem task (OPT), video recording, interviews, and field notes. results showed two major found First, used concept theory create modelling. They able represent information given form graph. Second, also modelling search algorithm. created interpreted by making connection between objects adjacency matrix connectivity. In devising plan, referred develop algorithms. However, algorithms not entirely efficient. Some them required initially all answer possibilities. constructed sequential conditional argues that graph-thinking skill can be developed through learning process which involves open-ended stimulate ideas solving. By developing ability, will analyse reason information, express ideas, have flexibility These skills are urgently needed 21st century where rapid continuous changes occur.