Peningkatan Pemahaman Konsep Fisika pada Materi Gerak Lurus setelah Penerapan Model Discovery Learning
DOI:
https://doi.org/10.46918/karst.v9i1.3484Keywords:
discovery learning; gerak lurus; pembelajaran fisika; pemahaman konsep; two-tier testAbstract
Penelitian ini bertujuan menganalisis peningkatan pemahaman konsep fisika peserta didik pada materi gerak lurus setelah penerapan model discovery learning. Penelitian ini menggunakan metode pra-eksperimen dengan desain one-group pretest-posttest. Sampel terdiri atas 34 peserta didik kelas X pada salah satu SMA negeri di Kota Makassar yang dipilih melalui purposive sampling. Data dikumpulkan menggunakan tes pemahaman konsep berbentuk two-tier sebanyak 20 butir yang telah divalidasi dan memiliki reliabilitas KR-20 sebesar 0,82. Pembelajaran dilaksanakan melalui tahapan stimulation, problem statement, data collection, data processing, verification, dan generalization. Data dianalisis menggunakan statistik deskriptif, uji normalitas Shapiro-Wilk, paired sample t-test, Cohen's dz, dan normalized gain (N-gain). Hasil penelitian menunjukkan rata-rata skor meningkat dari 52,35 pada pretest menjadi 78,65 pada posttest. Uji paired sample t-test menunjukkan perbedaan yang signifikan antara skor pretest dan posttest, t (33) = 12,94, p < 0,001, dengan rata-rata N-gain sebesar 0,55 (kategori sedang). Temuan ini menunjukkan bahwa penerapan model discovery learning mampu meningkatkan pemahaman konsep fisika peserta didik pada materi gerak lurus.
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