Improvements in Mathematical Communication Skills and Changes in Learning Motivation Among Junior High School Students Using a Deep Learning Approach Based on Realistic Mathematics Education (RME). SIGMA DIDAKTIKA: Jurnal Pendidikan Matematika, [S. l.], v. 14, n. 2, p. 69–84, 2026. DOI: 10.17509/sigmadidaktika.v14i2.909. Disponível em: https://ejournal-science.upi.edu/sigma/article/view/909. Acesso em: 20 aug. 2026.