Students will achieve the expected science education outcomes by giving more chances for scientific argumentation through building an argument, considering it, and debating various explanations on the phenomena. The learning activity is a complex and fast process, therefore the use of video can be a solution since the learning process can be explained in detail and observed repeatedly so that it can be analyzed properly. This study aims to analyze learning activities that facilitate the argumentation in biology on the topic of cloning in high schools. The study was conducted in three Islamic-based Private High Schools in South Tangerang City, Banten Province, Indonesia. The descriptive analysis method for Biology learning activities is recorded in full by using a video camera, then the video is transcribed and analyzed to determine the continuity of argumentation skills. The results of the analysis show that there is still a lack of scientific argumentation skills in learning cloning topic. Learning experiences taken by students have not provided an opportunity for in-depth scientific argumentation. It is necessary for biology learning efforts which can improve students' science argumentation skills.