<![CDATA[Students' critical thinking skills in tajweed learning were still low, particularly in providing reasons, supporting answers with relevant principles, and drawing conclusions. This study aimed to improve the critical thinking skills of eighth-grade students at SMP Negeri 4 Temanggung through the brainstorming method. The study employed Classroom Action Research (CAR) based on the Kemmis and McTaggart model and was conducted in two cycles, with two meetings in each cycle, involving 30 students. Data were collected through observations using a critical thinking rubric and cognitive assessments based on Higher Order Thinking Skills (HOTS) at the C4 level. The results showed an improvement in students' critical thinking skills. Based on the observation data, the proportion of students achieving at least the Good category increased from 50.0% at the end of Cycle I to 93.3% at the end of Cycle II. The cognitive assessment also showed an increase from 63.3% to 93.3%. At the end of Cycle II, the proportion of students in the Poor category reached 0% in both data sources. Therefore, the brainstorming method improved students' critical thinking skills in tajweed learning through activities involving idea generation, comparison and evaluation of arguments, and conclusion drawing based on tajweed principles. ABSTRAK Kemampuan critical thinking siswa dalam pembelajaran tajwid masih rendah, terutama dalam memberikan alasan, membuktikan jawaban berdasarkan kaidah, dan menarik kesimpulan. Penelitian ini bertujuan untuk meningkatkan kemampuan critical thinking siswa kelas VIII B SMP Negeri 4 Temanggung melalui metode brainstorming. Penelitian menggunakan Penelitian Tindakan Kelas (PTK) model Kemmis dan McTaggart yang dilaksanakan dalam dua siklus, masing-masing terdiri atas dua pertemuan, dengan subjek 30 siswa. Data dikumpulkan melalui observasi menggunakan rubrik critical thinking dan asesmen kognitif berbasis Higher Order Thinking Skills (HOTS) level C4. Hasil penelitian menunjukkan adanya peningkatan kemampuan critical thinking siswa. Berdasarkan observasi, persentase siswa yang mencapai kategori minimal Baik meningkat dari 50,0% pada akhir Siklus I menjadi 93,3% pada akhir Siklus II. Hasil asesmen kognitif juga menunjukkan peningkatan dari 63,3% menjadi 93,3%. Pada akhir Siklus II, kategori Kurang pada kedua sumber data mencapai 0%. Dengan demikian, metode brainstorming dapat meningkatkan kemampuan critical thinking siswa dalam pembelajaran tajwid melalui aktivitas mengemukakan gagasan, membandingkan dan mengevaluasi argumen, serta menyusun kesimpulan berdasarkan kaidah tajwid.]]>
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