This research aims to analyze the needs of teachers and students in developing liveworksheet-based Electronic Science Student Worksheets using a Problem Based Learning (PBL) approach in an elementary school environment on the subject of light and sound (Seeing because of Light, Hearing because of Sound) for class V. Qualitative descriptive research with the ADDIE development model which consists of five stages, namely Analyze, Design, Development, Implementation, and Evaluation. In the needs analysis, the research subjects were 47 students and 2 class teachers. The data collection techniques used were interviews and questionnaires to collect data resulting from needs analysis. The research results show that the teaching materials used by 2 teachers are still monotonous/lack of variety. From the research results, it can be concluded that the live worksheet-based Electronic Science Student Worksheet using the Problem Based Learning (PBL) approach to light and sound can be used as a learning medium..

This study aims to develop the Multiply Cards game as a medium for learning mathematics in additional material in elementary schools that is interesting, metacognitive, and connection-based. This type of research is research and development (R&D) according to the ADDIE development model which consists of five stages, namely: analysis, design, development, implementation, and evaluation. The subjects of this study were class students at SDN Mekarsari 5, Kec II.Cimanggis, Depok City. The research tools consisted of material expert validation instruments, media expert validation instruments, teacher validation instruments, and student and teacher response questionnaires. Based on the evaluation of the validity test, the validation results of the material experts were considered "very feasible" with a total of 85% and the results of the media expert validation were 89%, while the teacher's validation was obtained with a total of 81%. So it can be concluded that the development of the Multiply Cards game as a medium for increasing learning in elementary schools is categorized as "very likely". This means that the media developed by the researcher can be used as a learning medium for arithmetic operations in elementary schools.

This study aims to improve the learning outcomes of mathematics students in grades VI (SDN Kampungsawah 01, District Rumpin) with this type of action research. The subjects in this study were sixth grade students at SDN Kampungsawah 01 for the academic year 2022–2023, with a total of 28 students, consisting of 10 male students and 18 female students. Data obtained through tests, observations, and documentation Data analysis techniques using qualitative descriptive analysis According to the data analysis results, there was an increase in learning management by teachers, learning activities, and student learning outcomes from cycles I, II, and III, with each cycle obtaining the value of aspects of learning management by teachers in the observation phase at intervals of 2.12 with a predicate of "good enough," then increasing to 2.76 with a predicate of "good," 3.14 with a predicate of "good," and 3.5 with a predicate of "very good."At the observation stage, it was predicted that things would go well by 25%, and in cycle I it increased to 46.42% predicted good, then in cycles II and III it increased to 35.71% and 64.28% predicted very well.Learning outcomes have improved, particularly at the observation stage, where 21.41% are completed, cycle I is 53.57%, cycle II is 71.43%, and cycle III is 100%.Thus, it can be concluded that the application of the STEAM approach (Science, Technology, Engineering, Arts, and Mathematics), assisted by the Geogebra application, can improve the results of the mathematics learning of fifth grade students in SDN Kampungsawah 01, Rumpin District.