META ANALISIS: MODEL PROJECT-BASED LEARNING (PjBL) UNTUK MENINGKATKAN HASIL BELAJAR MATEMATIKA SISWA
DOI: https://doi.org/10.30605/pedagogy.v10i2.5930
Kata Kunci: Project-Based-Learning (PjBL), Hasil Belajar, Matematika
Abstract
Penelitian ini bertujuan untuk menganalisis pengaruh model pembelajaran Project-Based Learning (PjBL) terhadap hasil belajar matematika dengan menggunakan metode meta-analisis. Sebanyak 10 artikel yang diterbitkan antara 2020 hingga 2025 dipilih berdasarkan kriteria tertentu, yaitu artikel eksperimen yang memiliki kelompok kontrol dan eksperimen serta data kuantitatif seperti jumlah sampel, nilai rata-rata, dan simpangan baku. Data dikumpulkan dari Google Scholar dan Publish or Perish. Ukuran efek setiap artikel dihitung menggunakan rumus Cohen’s d dan dikategorikan menjadi kecil, sedang, besar, dan sangat besar. Selain itu, dilakukan uji dua rata-rata (t-test) untuk menguji signifikansi perbedaan hasil belajar antara kelompok eksperimen dan kontrol. Hasil analisis menunjukkan bahwa 70% artikel memiliki ukuran efek yang sangat besar, 20% besar, dan 10% kecil, yang menunjukkan bahwa penerapan PjBL memiliki dampak yang kuat terhadap peningkatan hasil belajar matematika. Rata-rata hasil belajar kelompok eksperimen adalah 74,24, lebih tinggi dibandingkan kelompok kontrol yang hanya 60,84, dengan nilai t-hitung 9,961 yang jauh lebih besar dari t-tabel 1,96. Ini berarti ada perbedaan signifikan antara kedua kelompok. Kesimpulannya, model PjBL efektif dalam meningkatkan hasil belajar matematika siswa karena dapat menghubungkan konsep abstrak dengan konteks nyata melalui proyek yang bermakna.
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