Instruments used include learning implementation observation sheets, mathematical communication observation sheets, and mathematical communication test questions. This research is a class action research with 31 students of VII-2 MTs Islamiyah Medan subject. This study aims to (1) improve students' mathematical communication skills through the STAD Type Cooperative Learning Model with the Reciprocal Teaching Approach in MTs Islamiyah Medan, (2) describe the process of implementing the STAD Type Cooperative Learning Model with the Reciprocal Teaching Approach at MTs Islamiyah Medan.