Choirunnisa, Ani and Nurhanurawati, Nurhanurawati and dahlan, syariffudin and Choirudin, choirudin and Muhammad Saidun, Anwar Development of Islamic Value-Based Mathematics Teaching Materials to Improve Students' Understanding of Mathematical Concepts. Jurnal Analisa, 8 (1). pp. 11-20. ISSN 2549-5143