Mind-map is a kind of graphic organizers that assist students to organize information. It is usually used to brainstorm people’s idea before writing and organize received information while reading. In content subject instruction, students are usually required to read textbooks that the content is about concepts and theories. The utilization of mind-map is considered as a good facility for students to study content subjects. This study aims at investigating how a teacher implements mind-map to facilitate students’ comprehension in content subject instruction. Besides, this study is also to find out students’ responses toward what the teacher does using that facilitative tool. A teacher who implements that idea is involved for a teaching journal as one of research data. Then, to attain the second research objective, two male and two female students are interviewed. The data will reveal the sequences of using mind-map to facilitate students’ comprehension in learning a content subject and how students respond that implementation.