Introduction: Breast cancer is the most frequent type of cancer in women, and it is one of the major causes of mortality. Efforts should be made to prevent breast cancer by using the breast self-examination (BSE) method of early diagnosis. This study aims to determine the effectiveness of the demonstration and audio visual methods on adolescent knowledge about breast self-examination at SMA Pertiwi 1 Jambi City, Indonesia. Methods. This study is a quasi-experimental study using a two-group pretest-posttest design at the private high school Pertiwi 1 Jambi City, involving 122 participants divided into two groups. Group 1 consisted of 61 participants given BSE material by demonstration, while group 2 consisted of 61 participants given material using audio-visual media. Data processing in this study used univariate and bivariate analysis, and the statistical test used was the Wilcoxon test. Results. The results showed that there was an increase in students' knowledge about BSE after the demonstration with p-value < 0.0001, and displayed audio-visually with p-value < 0.0001. Conslusion: demonstration and audiovisual methods proved effective in increasing adolescent knowledge about breast self-examination at at SMA Pertiwi 1 Jambi City, Indonesia. Keywords: breast self-examination, knowledge, cancer, demonstration, audio visual

Background: Midwives are one of the main health workers at the frontline of health development to accelerate the decline in Maternal Mortality Rate (MMR) and Infant Mortality Rate (IMR). Therefore, competent and skilled midwives are needed in carrying out clinical procedures, especially in handling emergency cases of postpartum hemorrhage, with critical analysis skills. This study aims to determine the effectiveness of e-book application model uterine hypotonia management guide and pocket book in improving midwife knowledge and skills in basic care. Method: The research design used was pre-post study, which was carried out in February-April 2021. The population and sample in this study were all midwives who provided delivery assistance at the Jambi City Health Center, totaling 64 respondents. Data analysis used the Wilcoxon and Mann-Whitney tests. Results: In each intervention group, all variables, including knowledge and skills, are increased in both groups defined. The results showed that the educational media application of guidelines and pocketbooks on postnatal emergency management increased knowledge and skills. Conclusion: The two study groups had a significant effect on increasing the knowledge and skills of midwives in handling postnatal emergencies due to uterine atony.