The Indonesian Adolescent Reproductive Health Survey (Survei Kesehatan Reproduksi Remaja Indonesia-SKRRI)h ighlights the lack of knowledge amongst adolescents regarding puberty. Other studies have identified the limited advice from parents, because parents and teachers frequently opt not to discuss experiences related to adolescent reproductive health. This study aims to understand the perception of teachers and students in higher grades with regards to puberty. The study used a qualitative approach, collecting data via in-depth interviews with teachers and students. There were seven informants, consisting of five teachers and two students studying in grade IV-VI from two schools in North Jakarta. The study shows teachers, as well as students, often had only a limited understanding of puberty and considered it a vulgar subject which should not be discussed. Teacher capacity building is needed regarding the material and delivery methods of puberty content. Keywords: puberty, higher grade, elementary school

Hypercontent Book Virus was launched for teachers who facilitate learning at higher grades elementary school. The book shared by means of social media and web link of Faculty of Public Health, University of Muhammadiyah Jakarta. The study aims to evaluate whether the book applicable, especially in the middle of Covid-19 pandemic while learning activities should be done at home. After 2 weeks, the reader responses data were analyzed. As many as 69 responses received, and most of the respondents were female, aged younger than 20year-old and graduated from high school. Almost a half of the respondents had difficulties while delivering material about virus. The respondents urgently require new media to help them deliver it. Positive evaluation was stated about content, clarity and comprehensiveness description, material sequence, as well as understandable and title. The e-book has been completed with interactive quizzes at the end of every topic and reviewed in accordance to the readers' suggestion and highly recommended for elementary school especially in the middle of Covid 19 pandemic. Along with the teachers, parents could also facilitate the learning process at home.