Solar and lunar eclipses are astronomical phenomena which is an excellent topic for introducing astronomy to primary school students. We have used Minecraft which is a popular game about placing blocks to construct anything and can make a simple model of the Sun, Moon and Earth easily. The background knowledge of Pratom 6 students (grade 6) has already had about the position of them on Earth and how they see the Sun and Moon. This article will show how students investigate the relationship between Sun, Moon and Earth and when will solar and lunar eclipses occur in their game situation. After class students should draw and write essay about solar and lunar eclipses concept journal. The result will be shown at the conference.