The ability to think critically is an essential skill and becomes one of the primary goals in college. A person who can think critically will be able to use appropriate criteria to evaluate an argument. There must be clear evidence and accompanied by a plausible explanation. This study aims to investigate students' critical thinking skills in determining an argument. The subject is the students of mathematics education program at one private university in Pasuruan, i.e., 31 students. Then, some students who have unique answers are selected to be interviewed further about their critical thinking ability to an argument. This research is a descriptive qualitative research. Based on the results of a written test of 31 students, there is one student who has a unique answer. The answer is different from other students, so from the results of these tests, the student is selected for the further interview. The findings of this study highlighted that the student can mention arguments with the accurate reasons and has a potential to have the ability to think critically.

This study aims at investigating the difference in students' mathematical argumentation skills before and after the implementation of argument mapping in learning mathematics. It is a quasiexperiment with a quantitative approach. The population was the students of class X Natural Sciences Program in a state senior high school in Pasuruan, East Java, Indonesia. 36 students were involved. The instrument was a mathematical argumentation skills test. Several components were established, adopted from the Revised Bloom's Taxonomy, namely identifying (C1), explaining (C2), drawing conclusions (C3), reducing/adding premises (C4), deducing (C5), and developing/constructing (C6). Students' mathematical argumentation skills were analyzed using the Wilcoxon signed-rank test at 5% level of significance (∝ = 0.05). The findings of this study indicate that students' argumentation skills after the implementation of argument mapping is better than prior treatment (p = 0.002). It can be claimed that argument mapping is effective for improving such skills.

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This is an open access article under the CC-BY-SA license (https://creativecommons.org/licenses/bysa/4.0/) ISSN 2337-9049 (print), ISSN 2502-4671 (online) Abstrak:Abstract: Kemampuan berpikir logis memiliki peran penting dalam pemecahan dan pembelajaran konsep matematika dan untuk meningkatkan hasil belajar. Penelitian ini adalah penelitian kualitatif deskriptif yang bertujuan untuk mendeskripsikan kemampuan berpikir logis siswa kelas VII dalam memecahkan masalah matematika yang ditinjau dari gaya belajar pada pokok bahasan aritmatika sosial. Subjek dalam penelitian ini berjumlah 3 siswa dengan siswa bergaya belajar visual, auditori dan kenestetik. Pengumpulan data menggunakan angket gaya belajar, tes kemampuan berpikir logis, wawancara dan dokumentasi. Berdasarkan hasil penelitian, subjek bergaya belajar visual memiliki kemampuan berpikir logis yaitu pada tahap klasifikasi, tahap menghubungkan, tahap menghitung dan tahap menarik kesimpulan. Subjek bergaya belajar auditori memiliki kemampuan berpikir logis yaitu pada tahap klasifikasi, tahap menghubungkan, tahap menghitung dan tahap menarik kesimpulan. Sedangkan subjek bergaya belajar kinestetik memiliki kemampuan berpikir logis yaitu pada tahap klasifikasi, tahap menghubungkan dan tahap menarik kesimpulan.The ability to think logically has a vital role in solving and learning mathematical concepts, its to improve learning outcomes. This research is descriptive qualitative research that aims to describe the ability of students to think logically in class VII in solving mathematical problems in terms of learning styles on the subject of social arithmetic. The subjects in this study amounted to 3 students with students learning styles visual, auditory, and kinesthetic. Data collection uses learning style questionnaires, logical thinking skills tests, interviews, and documentation. The results of the study show that three stages of the logical thinking ability with visual learning style subject, namely the connecting stage, the counting stage, and the conclusion drawing stage. Auditory learning style subjects can think logically that is at the classification stage, the connecting stage, the counting stage, and the conclusion drawing stage. Whereas the kinesthetic learning style subject can think logically, that is at the classification stage, the connecting stage, and the conclusion drawing stage. PendahuluanSalah satu kemampuan yang erat kaitannya dengan pemecahan masalah matematika adalah kemampuan berpikir logis (penalaran logis) yaitu kemampuan menyimpulkan suatu kebenaran berdasarkan aturan, pola atau logika tertentu (Usdiyana dkk, 2009). Kemampuan berpikir logis perlu dikembangkan dalam pembelajaran matematika siswa, karena dapat meningkatkan kemajuan pemahaman matematika (Sumarmo, 2009) . Kemampuan berpikir logisDesi Melatul Fitriyah, STKIP PGRI Pasuruan

Penelitian ini bertujuan untuk meningkatkan hasil belajar pada sub bab Pengukuran Sudut melalui model pembelajaran Scramble dengan pemanfaatan Macromedia Flash 8.0 pada siswa kelas VB SD Muhammadiyah 9 Malang. Penelitian ini mengikuti desain penelitian tindakan kelas. Data pada penelitian ini berupa data hasil belajar siswa sebelum pelaksanaan tindakan, data hasil evaluasi disetiap siklus, dan data hasil belajar siswa setelah pelaksanaan tindakan. Hasil penelitian menunjukkan adanya peningkatan hasil belajar siswa setelah menerapkan model pembelajaran Scramble dengan pemanfaatan Macromedia Flash 8.0. Peningkatan tersebut sebesar 7,41%, dengan rata-rata nilai 85,75. Berdasarkan hasil tersebut dapat disimpulkan bahwa hasil belajar siswa Kelas VB SD Muhammadiyah 9 Malang pada sub bab pengukuran sudut mengalami peningkatan setelah menerapkan model pembelajaran Scramble dengan pemanfaatan Macromedia Flash 8.0.