This paper firstly presents and analyses the advantages of the Graphic Organizers tool as a popular and effective tool in teaching in general. Then, we propose the process and steps of applying Graphic Organizers in teaching writing informational texts in Language of Arts subject. Through specific illustrative examples, this study aims to present some forms of Graphic Organizers to help teachers and students have a clear picture of how to use Graphic Organizers in the process of teaching writing an informational text to develop students' competence and meet the requirements of the General Education Program in Language of Arts 2018 at the same time.