The community service program in Kartikajaya Village aims to develop local economic potential through mangrove planting as a tourist attraction. Kartikajaya Village has geographical conditions that support the development of ecotourism, but the lack of public awareness and understanding of the benefits of mangroves is a major obstacle. This activity involves local communities in the process of planting and maintaining mangroves, as well as providing education about the importance of mangroves in maintaining the balance of coastal ecosystems and increasing village tourism attractiveness. The results of this program showed an increase in community awareness of environmental conservation as well as an increase in tourist visits to the village. Thus, mangrove planting not only serves as an environmental conservation effort, but also as a driver of economic growth through the tourism sector in Kartikajaya Village.

The research is aimed at identifying factors that cause student failure in learning and the types of difficulties experienced by students. The subject of this study is an eighth grade high school student Dwiguna Depok. The data analysis technique used in this study is data reduction, i.e. concluding, separating important things that have already been obtained through the observation, interview and documentation stages of mathematical learning difficulties. This research includes a descriptive type with a qualitative approach. The results show that there are several factors that cause students difficulties in learning mathematics, including individual differences in mathematical ability, lack of motivation, inappropriate teaching methods, health or emotional disorders, and environmental factors.