Siti Maryam Rohimah, Darhim, Dadang Juandi
This study aims to design the a Learning Trajectory (LT) which is the process of designing a learning intervention through a series of systematic activities to develop students' mathematical proficiency in online learning of linear equations in one variable. learning trajectory is formed from Hypothetical Learning Trajectory (HLT). HLT consists of learning objectives, learning activities to be taken, and students' thinking conjectures. This study uses design research methods. The stages of this research consisted of preliminary design, teaching experiment, and retrospective analysis. Data were collected from various sources, namely from test results, student worksheets, teacher and student observation sheets, documentation, interviews, and video recordings during learning. The research subjects were 25 students of class VII junior high school. Based on the results of retrospective analysis, the HLT needs to be revised by adding reinforcement and understanding of concepts regarding operations of algebraic forms, especially the multiplication of two algebraic terms, also adding reinforcement and understanding of concepts in operations of fractional forms. The overall average of students is in the proficient category with an equivalent numerical value of 83, so it can be concluded that the HLT designed is effective in developing students' mathematical proficiency in online learning linear equations in one variable. © 2024 Author(s).
Department of Primary School Education, Universitas Pasundan, Jl. Tamansari No. 6-8, Bandung, Jawa Barat, 40116, Indonesia; Departement of Mathematics Education, Universitas Pendidikan Indonesia, Jl. Dr. Setiabudi No. 229, Bandung, Jawa Barat, 40154, Indonesia
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