Penerapan Pendekatan Open-Ended untuk Meningkatkan Kemampuan Berpikir Reflektif Matematika Siswa di SMA Negeri 1 Panyabungan
Keywords:
berpikir reflektif, pendekatan open-ended, pembelajaran matematika, penelitian tindakan kelasAbstract
Penelitian ini bertujuan untuk meningkatkan kemampuan berpikir reflektif matematika, aktivitas belajar siswa, serta kemampuan guru dalam mengelola pembelajaran melalui penerapan pendekatan open-ended pada materi logika matematika di kelas X MIA-1 SMA Negeri 1 Panyabungan. Penelitian ini menggunakan desain Penelitian Tindakan Kelas (PTK) yang dilaksanakan dalam dua siklus dengan subjek 30 siswa. Data dikumpulkan melalui tes kemampuan berpikir reflektif, lembar observasi aktivitas siswa, dan lembar observasi keterampilan guru, kemudian dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa penerapan pendekatan open-ended dapat meningkatkan rata-rata nilai kemampuan berpikir reflektif dari 71,87 pada siklus I menjadi 82,07 pada siklus II, dengan persentase ketuntasan naik dari 73,33% menjadi 96,67%. Aktivitas belajar siswa meningkat dari 78,33% pada siklus I menjadi 83,99% pada siklus II. Kemampuan guru dalam mengelola pembelajaran juga mengalami peningkatan dari kategori “Cukup” pada siklus I menjadi “Sangat Baik” pada siklus II. Temuan ini menegaskan bahwa pendekatan open-ended efektif untuk meningkatkan kualitas pembelajaran matematika dan layak direkomendasikan bagi guru pada mata pelajaran lain.
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