Development of Digital Teaching Materials through a Realistic Mathematics Approach used by Autograph Software to Improve Students' Problem-Solving and Mathematical Communication Abilities

Agus Selamat Telaumbanua (Postgraduate Mathematics Education Study Program, Medan State University)
Waminton Rajagukguk (Postgraduate Mathematics Education Study Program, Medan State University)
Hamidah Nasution (Postgraduate Mathematics Education Study Program, Medan State University)

Jurnal Perspektif
Vol 10 No 2 (2026): Jurnal Perspektif

This study aims to determine: produce digital teaching materials through a Realistic Mathematics approach assisted by Autograph software that is valid, practical and effective; analyze the improvement of students' mathematical problem-solving abilities; and analyze the improvement of students' mathematical communication abilities after the implementation of the teaching materials. This study is a development research with a 4-D development model by Thiagarajan which includes the stages of define, design, develop, and disseminate. The results of the study indicate that: The digital teaching materials meet the criteria of valid, practical and effective; There is an increase in students' mathematical problem-solving abilities with an average N-Gain value of 0.77 which is included in the "High" category; There is an increase in students' mathematical communication abilities with an average N-Gain value of 0.62 which is included in the "Medium" category.