This study aims to estimate the economic value of the Trokon River in Rejang Lebong Regency as a natural resource with both ecotourism potential and essential ecological functions. The research applies the Contingent Valuation Method (CVM) using a Willingness to Pay (WTP) approach to determine how much visitors and local residents are willing to contribute to the conservation of the river. Data were collected through questionnaires distributed to 100 respondents, consisting of tourists and local community members. The results show that the average WTP is IDR 12,000 per visit, with a total estimated economic value of IDR 60,000,000 per year. Significant factors influencing WTP include income level, frequency of visits, and environmental awareness. These findings indicate that the Trokon River holds considerable economic value that should be integrated into community-based conservation management. The study recommends implementing a voluntary conservation fee system and strengthening local institutions to support sustainable management.

This study aims to evaluate the effectiveness of using visual media, specifically flashcards, in enhancing the vocabulary of first-grade students at SDN Wonorejo 3 Surabaya. This topic was chosen due to the importance of vocabulary development in language learning and the need for innovative teaching methods. The research method involved a quantitative approach with a pre-experimental design, collecting data through pretests and posttests on 30 students. The results showed a significant increase in students' vocabulary scores after using flashcards, with the average pretest score of 59.87 rising to 84.47 in the posttest. These findings confirm that flashcards are an effective learning medium for improving students' vocabulary. The conclusion of this study is that the use of visual media like flashcards can significantly enhance vocabulary comprehension, supporting the development of students' communication skills.