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Problem solving plays an important role in mathematics and should have a prominent role in the mathematics education. The term "problem solving" refers to mathematics tasks that have the potential to provide intellectual challenges for enhancing students' mathematical understanding and development. In addition, the contextual problem that requires students to connect their mathematical knowledge in solving mathematical situational problem is believed to be an impact on the development students' problem-solving ability. The tasks that have been developed by PISA meet both of these criteria.

The aim of this research is to produce a set of PISA-like mathematics task with Indonesia natural and cultural heritage as a context which is valid, practical, to assess students' math literacy. This design research using a type of development research with formative evaluation. A total of 20 students of SMP Negeri 1 Palembang. Besides, ten experts were involved in this research to assess the feasibility of prototyping regarding content, context, and language. Walkthrough, documentation, questionnaire, test result and interviews are way to collect the data. This research produced a PISA-like math task is like many 12 categories of content, context, and process valid, practical and had a potential effect. The validity came empirical evaluation of validation and reliability testing of the small group. From the field test, we conclude that the tasks also potentially impact to the students' mathematical literacy in activating the indicators of each Fundamental Mathematical Capabilities. AbstrakTujuan dari penelitian ini adalah menghasilkan soal PISA dengan konteks warisan alam dan budaya Indonesia yang valid dan praktis untuk menilai kemampuan literasi siswa. Penelitian ini adalah jenis penelitian design research dengan tipe development research. Penelitian ini menggunakan alur formative evaluation. Subjek dalam penelitian ini adalah 20 siswa kelas IX SMP Negeri 1 Palembang. Disamping itu, terdapat 10 dosen ahli yang terlibat dalam penelitian ini, baik dari dalam maupun luar negeri. Para ahli tersebut menilai kelayakan soal dari segi konten, konteks, dan bahasa. Proses pengumpulan data diperoleh dengan cara walk through, documentation, questionnaire, test result, dan interviews. Uji validitas dan reliabilitas soal dilakukan pada tahap small group. Pada tahap field test, diperoleh bahwa soal PISA dengan konteks warisan alam dan budaya Indonesia mampu memunculkan kemampuan literasi siswa berupa kemampuan dasar matematika.

The chart of Indonesian student of mathematical ability development in Program for International Student Assessment (PISA) event during the last 4 periods shows an unstable movement. PISA aims to examine the ability of children aged 15 years in reading literacy, mathematics literacy, and science literacy. The concept of mathematical literacy is closely related to several other concepts discussed in mathematics education. The most important is mathematical modelling and its component processes. Therefore the goal of this research is to investigate secondary school students' difficulties

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