This research aims to describe the process of formulating in mathematical literacy in solving the PISA-like problem viewed from cognitive style. In this research, two subjects were selected based on the math ability test, GEFT test, and the same sex. The results showed that in solving the PISA-like mathematics problems in the process of formulating, students with a cognitive field-dependent style were able to identify the information needed to solve the problem by mentioning information that was known and asked about the problem and tending to use the sentence in the question. Students are able to represent a problem mathematically using verbal representations, symbols, images, variables, formulas, diagrams and mathematical models that are appropriate, but not capable of visually representing a 3-D model into a 2-D model. While students in the cognitive field independent style in solving the PISA model problem in the process of formulating, students are able to identify the information needed to solve the problem by mentioning information that is known and asked about the problem and tends to use their own language. Students are able to represent a problem mathematically using verbal representations, symbols, images, variables, formulas/formulas, diagrams, and appropriate modeling, and are capable of visually representing 3-D models into 2-D models.
Penelitian ini bertujuan untuk meningkatkan prestasi belajar matematika menggunakan pendekatan problem posing. Penelitian ini dilakukan sebanyak dua siklus dengan setiap siklus terdapat empat pertemuan, yaitu tiga pertemuan untuk proses pembelajaran dan satu pertemuan untuk tes akhir siklus. Subjek penelitian yang digunakan dalam penelitian adalah siswa kelas VII G SMP Negeri 2 Merauke tahun ajaran 2019/2020 yang berjumlah 35 siswa yang terdiri dari 13 siswa laki-laki dan 22 siswa perempuan. Teknik pengumpulan data yaitu tes dan observasi. Hasil penelitian yang diperoleh menunjukkan bahwa nilai rata-rata tes prestasi belajar matematika siswa meningkat dari tahap pra siklus yaitu 67,21 menjadi 78,21 pada siklus 1, dan pada siklus 2 meningkat lagi mencapai 80,21. Persentase prestasi belajar pada pra siklus mencapai 42,85% menjadi 74,29% pada siklus 1, dan meningkat pada siklus 2 mencapai 82,86% terdapat dalam kategori baik dan sangat baik. Dari hasil tersebut disimpulkan bahwa dengan pendekatan problem posing dapat meningkatkan prestasi belajar matematika siswa
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