Latar Belakang:Fibroadenoma mamae (FAM) merupakan tumor jinak yang paling umum terjadi pada wanita muda yaitu pada usia reproduksi 15-35 tahun. Salah satu upaya yang dapat dilakukan untuk mendeteksi fibroadenoma mammae secara dini adalah melakukan SADARI (Pemeriksaan Payudara Sendiri). Kurangnya pengetahuan terhadap SADARI menyebakan rendahnya motivasi sehingga menimbulkan rasa malas dan enggan melakukan SADARI. Tujuan: Untuk menganalisis pengaruh media video edukasi terhadap tingkat pengetahuan mengenai fibroadenoma mammae dan motivasi melakukan SADARI pada remaja putri di SMK N 4 denpasar. Metode: Penelitian ini menggunakanThe one group Pre-test Post-test design. Teknik sampling yang digunakan adalah total sampling dengan jumlah sampel 181 responden. Instrumen yang di digunakan adalah kuesioner pengetahuan mengenai fibroadenoma mammaedan motivasi melakukan SADARI. Hasil: Sebelum diberikan penyuluhan sebanyak46,4% dengan kategori rendah dan sesudah diberikan sebanyak 87,3% dengan kategori baik pada variabel pengetahuan,sedangkan pada variabel motivasi sebanyak 51,4%dengan kategori rendah dan setelah diberikan penyuluhan sebanyak 87,8% dengan kategori sedang. Hasil uji statistik menggunakan Wilcoxon signed ranks testdidapatkan hasil pvalue 0.000(p

Background: Fibroadenoma mammae (FAM) is a benign tumor that most commonly occurs in young women at the reproductive age of 15-35 years. One of the efforts that can be done to detect fibroadenoma mammae early is to do SADARI (Breast Self-Examination). Lack of knowledge about breast selfexamination causes low motivation, resulting in laziness and reluctance to do breast self-examination. Aim: This study aimed to analyze the effect of educational video on the level of knowledge about fibroadenoma mammae and motivation to do breast selfexamination in adolescent girls in Public Vocational School 4 Denpasar. Methods: This study employed the one group pre and post-test design. The sampling technique used was total sampling with a sample size of 181 respondents. The instruments used were questionnaire to measure the knowledge about fibroadenoma mammae and another questionnaire to measure the motivation to do breast self-examination. Results: The results showed that in the pre-test, only 30.4% respondents had a good knowledge, and the post-test results showed 87.3% of respondents had a good knowledge about fibroadenoma mammae. In the motivation domain, the pretest showed there were only 48.6% respondents had a moderate motivation, and the post-test showed an increase, in which 87.8% respondents had moderate motivation to do breast self-examination. The results of statistical tests using the Wilcoxon signed ranks test obtained the results of knowledge p-value 0.000 (p