iarjelIARJELIARJEL2708-5120https://doi.org/10.47310/iajel.2023.v05i01.004Development of Mathematics Learning Materials Based on LiteracyNurAsrawatiBasoIntangSappaileNurwatiDjam’anDepartment of Mathematics Education, Universitas Negeri Makassar, Indonesia, 90222This study is a Research and Development (R&D) study using the Plomp model, which consists of the preliminary investigation phase, design phase, realization phase, testing phase, evaluation and revision phase. The developed learning tools include Lesson Implementation Plans (RPP), Student Worksheets (LKPD) and Teaching Modules. The instruments used to collect data consist of validity sheets. Validity in R&D includes content validity and construct validity. The purpose of this study is to produce valid mathematics learning tools on sequences and series to enhance students' mathematical creative thinking skills. The results of the learning tool development are as follows: (1) the developed learning tools are deemed valid by two validators, with an average validity score of 3.58 for RPP, categorized as very valid; 3.56 for LKPD, also categorized as highly valid; and 3.56 for Teaching Modules, also categorized as highly valid. Thus, the literacy-based mathematics learning tools developed meet the validity criteria.