The guarantee of educational quality is required for higher education system in Japan. Although programing skill is composed of plural technical elements, it is usually evaluated by only logical thinking. As a result, not a few students with some elements of programing skill, may give up continuing to learn programing. Therefore, we aim for the construction of the skill standard to supply learning method depending on degree of achievement. In this paper, we propose how to clarify the process of thinking for algorithm construction by eye tracking is strongly related in study skill.