Social arithmetic is an important material of mathematics education because it is closely related to financial learning and everyday economic activities. Nevertheless, students often struggle to grasp social arithmetic concepts such as cost price, profit and loss, percentages, and discounts. This study aims to develop a local instructional theory on social arithmetic material using the PMRI app…
This study aims to design a Local Instructional Theory (LIT) to support junior high school students’ proving process on geometric transformations through the integration of South Sumatera Songket motifs as Context for learning. Using design research, the study proceeded through three phases: preliminary design, iterative design experiments (pilot and teaching experiments), and retrospective a…
Penelitian ini berfokus pada suatu bentuk desain pembelajaran yang dianggap tepat untuk pembelajaran matematika materi peluang kejadian majemuk. Penelitian ini bertujuan menghasilkan Local Instruction Theory (LIT) untuk domain materi peluang kejadian majemuk. Penelitian ini menggunakan design research yang terdiri dari tiga tahap: preliminary design, teaching experiment, retrospective analysis.…
Mathematical literacy is a fundamental 21st-century competence that enables individuals to formulate, apply, and interpret mathematics in diverse real-life contexts. However, Indonesian students’ mathematical literacy performance, particularly in inclusive school settings, remains relatively low, as reflected in the PISA 2022 results. One of the main challenges lies in teachers’ limited und…
Mathematical literacy is a key competency required for students to address the challenges of the 21st century; however, international assessments such as PISA indicate that Indonesian students’ mathematical literacy remains relatively low, particularly in reasoning, problem solving, and applying mathematics in real-life contexts. This condition reflects a gap between national assessment deman…
A local trajectory is a series of mathematical activities designed to facilitate the development of students' understanding of learning objectves. This study aims to develop a Local Instruction Theory (LIT) for teaching the concepts of central tendency (mean, median, mode), and to explore how students develop their understanding informally using the context of pH water to support students' crit…
This design research study aims to develop a Local Instructional of Theory (LIT) for teaching the concept of derivatives in high school mathematics by embedding instruction within the globally relevant context of climate change. Guided by five research questions, the study systematically investigates: (1) insights from existing literature on derivative instruction and contextual gaps; (2) how g…
This study aims to develop and validate a STEM-based Local Instructional Theory (LIT) using a football context to support pre-service teachers’ mathematical flexibility in learning parabolic equations. The study employed a design research methodology with a validation study approach, consisting of the phases of preliminary design, teaching experiment (pilot experiment and full teaching experi…
Outdoor-based mathematics offers meaningful opportunities to connect abstract concepts with students' real-world experiences. This study explore the characteristics and development of outdoor learning mathematics within the context of Putri Pinang Masak Park Jambi, guided by the principles of the Indonesian Realistic Mathematics Education (PMRI) approach. It employed development study design wi…
This thesis is entitled "The Effect of TPI Pasar Bawah Development on the Socio-Economic Life of the Coastal Community of Pasar Bawah South Bengkulu Regency in 2004-2022" The purpose of this research is useful to know exactly how the development of Pasar Bawah Fish Auction Centre and its influence on the economy and social life of the people living on the coast of Pasar Bawah South Bengkulu Reg…
This dissertation aims to design financial mathematics tasks based context for vocational students. The focus area is how to design a task which is valid, practical, and has potential Financial mathematics is a crucial discipline, especially for vocational students. This dissertation focused on designing financial mathematical tasks based on contexts for vocational students that are valid, prac…