Salva R, Hamidah H, Ayuningtyas V, Kusuma JW. IMPLEMENTATION OF THE COLLABORATIVE PROBLEM-SOLVING LEARNING MODEL USING GEOGEBRA ON THE MATHEMATICAL COMMUNICATION ABILITY AND CONFIDENCE OF MTS ISLAMIYAH CIOMAS STUDENTS. ECO EDU ENTRE [Internet]. 2024Aug.30 [cited 2026Apr.20];4(2):595-603. Available from: http://ije3.esc-id.org/index.php/home/article/view/302