Contribution/Originality: The paper's primary contribution is finding why primary school teachers possess a wrong understanding of songs teaching methods for their students, which results in poor teaching performance. Through an action research approach, this research is trying to pioneer that a technology and media assisted methodology can change their understanding and result in better teaching performance. 1. INTRODUCTION Primary school teachers in one of districts in West Java, Indonesia, are accustomed to teach songs to students through traditional oral methods, though their singing skills lack adequate techniques, a strong pitch control and a stable singing tempo. Such an inadequacy in their teaching methodology has been there for a long time. Evidences prove that these methodological weaknesses have made a systemic impact on students' singing skills, techniques and pitch control. Their weaknesses are also reflected in the results of tests which show that an average of about 10% students in each class can sing well which is unfortunately not the result of teaching and learning in school, but because of their artistic discordancy, or pursuing art courses from outside institutions. It is expected that Indonesian students pursuing courses in singing and music under the guidance of school teachers should eventually acquire adequate singing skills. Their music or vocal education starts at primary school level (six years), then at

With the widespread use of virtual store applications such as Shopee, it is imperative to increase the awareness of potential buyers to choose trusted products and stores. Store reviews are one of the essential bases on which buyers determine whether or not they will buy the products. Buyers can see the language used by the reviewers; whether the review assess the products positively or not especially when the online shop owner replies to these reviews. This has encouraged the researchers to conduct a sociolinguistic study on the registers used in product reviews. The data for the study was taken from the Shopee platform. Sociolinguistic theoretical approach as proposed by Fishman (1972) with a focus on interaction patterns, studies of language barrels, and language functions has been used in this study. The results of this study show how the interaction patterns, language tunings, and language functions occur in the @izdihaar_olshop13 store reviews. Based on the analysis in giving reviews in online stores, there are two patterns of interaction found; the interaction pattern between individuals and groups, and the interaction patterns between groups and groups. In addition, there are two kinds of language variation used namely casual language variety and consultative language variety. The study also found two language functions realized in the reviews namely expressive functions and referential functions. The results of the study serve to provide the community with important information they can use in conducting their buying and selling activities.

Virtual Reality technology can manifest 3D virtual environments that are computer-simulated, and allows for the emergence of various interactions in 360° space. Virtual Reality is a technology that allows users to interact with an environment simulated by a computer. This study aims to create multimedia in the form of videos and photos based on Virtual Reality in the context of learning Indonesian for Foreign Speakers (BIPA). This research is based on Research and Development (R & D). The steps taken in this research process were: (1) research and data collection, (2) planning, (3) product development, (4) initial field trials, (5) revision of trial results, (6) product improvement and (7) final field implementation test. Based on the validation of experts, both Indonesian linguists and media experts, this Virtual Reality multimedia is feasible to be used as BIPA learning media. In addition, based on limited test results, this Virtual Reality multimedia fulfills three variables, namely: functionality, efficiency, and usability.

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