Syafriandi, S., Amalita, N. and Fitria, D. 2020. Designing Student’s Worksheet on Statistical Topics using Lesson Study Approach in Collaboration with MGMP Matematika SMA Pesisir Selatan. Pelita Eksakta. 3, 2 (Nov. 2020), 166-169. DOI:https://doi.org/10.24036/pelitaeksakta/vol3-iss2/144.