Pengaruh Daun Katuk (Sauropus androgynus (L.) Merr.) terhadap Waktu Perdarahan (Bleeding Time) pada Tikus Wistar Jantan sebagai Alternatif Obat Antitrombotik (The Effect of Star Gosseberry (Sauropus androgynus (L.) Merr.) to bleeding time of Male Wistar

Background: Cardiovascular disease can be treated with synthetic or traditional antithrombotic drugs (herbal). Synthetic antithrombotic drugs have a lot of side effects, so as an alternative antithrombotic is used traditional drugs, star gosseberry. Star gosseberry have many active compounds which are suspected to inhibit platelet aggregation. Objective: to know the effect of star gosseberry on bleeding time of male Wistar rats as an alternative antithrombotic drugs. Methods of research: this study was experimental laboratory research with post-test only control group design. The research samples were 24 male wistar rats and divided into 4 groups: negative control (distilled water), positive control (aspirin 5,85 mg dose), treatment 1 (star gosseberry 4,5 mg/g dose), and treatment 2 (star gosseberry 2.25 mg/g dose). The treatment was given for 8 days then the tail of samples were cut by 0.5 cm from the tip of the tail. Every 30 seconds the blood that dripped out was absorbed on absorbent papers until the bleeding stops. Bleeding time was measured from initial point of bleeding until the cessation of the bleeding point. Result: star gosseberry dose 4,5 mg/g had the same effect as aspirin that was prolonged bleeding time. Conclusion: star gosseberry could be prolonged bleeding time so it can be used as an alternative antithrombotic drugs. Keywords: Katuk leaf, bleeding time, antithrombotic, platele

Pentingnya Media Pembelajaran dalam Meningkatkan Minat Belajar Siswa pada Masa Pandemi Covid-19 di SD N Bojong 3 Tangerang

School is a place for students to think about. Usually we find in the homeroom there are students who are less energetic in considering and less tolerant of what is conveyed by the educator. Students here and there feel bored with the discussion-based learning model, so as a teacher they are critical and work on learning ideas in the homeroom. Learning media has a big role in increasing the learning income of students at SD N Bojong 3 Tangerang, especially in the lower grades, because grade 2 students cannot think rationally, so the material instructed by the teacher must be described in a more unique/significant construction. Intellectually, learning media is very valuable for the psychological progress of children in terms of learning. Likewise, the use of media in the learning cycle can also provide meaningful experiences for students. In general, it can be concluded that the use of media in association learning can provide ideas for three things, given to teachers, to students and the learning cycle in the exam room. In compiling learning media there are several stages that must be considered, specifically: (1) the media must be arranged as simply as possible so that it looks clear and is sufficiently understood by students; (2) the media must be arranged based on the subjects to be taught; (3) the media must be arranged so that it is not too confusing and does not confuse young people; (4) the media must be prepared with materials that can be accessed effectively and easily obtained, but do not reduce the true meaning and limits of the media; (5) Media can be arranged such as models, pictures, coordinated blueprints, etc., but with clear material so that they can be obtained successfully so that it does not make it difficult for the teacher to design the media in question