Rindastri V, Wahyuningrum E, Sudirman S, Hidayat R. A didactical design research on think-talk-write integrated with GeoGebra: Promoting mathematical communication and collaborative learning. Polyhedron Int. J. Math. Educ. [Internet]. 2026 May 30 [cited 2026 Jun. 25];4(1):16-29. Available from: https://nakiscience.com/index.php/pijme/article/view/286