PENGEMBANGAN INSTRUMEN PENILAIAN PORTOFOLIO DALAM PROSES PEMBELAJARAN IPAS KELAS IV SEKOLAH DASAR
چکیده
Assessment in Natural and Social Sciences (IPAS) at the elementary school level needs to document students’ knowledge, process skills, and character development continuously rather than relying solely on written test results. This study aimed to develop a flexible portfolio assessment instrument, determine its validity and practicality, and examine its perceived usefulness based on the fourth-grade teacher’s assessment at SD Negeri 075027 Silima Omo. The study employed a Research and Development (R&D) approach using the 4D model, comprising Define, Design, Develop, and Disseminate stages. The participants included three expert validators, one fourth-grade teacher, and 22 students, with 10 students participating in the small-group trial. The resulting product was a printed portfolio assessment instrument comprising seven integrated components. Validation results yielded mean scores of 3.83 for design, 3.75 for language, and 4.00 for evaluation on a four-point scale. The practicality score increased from 62.50% to 93.75%, while perceived usefulness increased from 64.29% to 85.71%. The small-group trial produced a mean portfolio score of 80.80. The instrument was considered suitable for use; however, inter-rater reliability and its effectiveness in improving learning outcomes require further empirical investigation. ABSTRAK Penilaian pembelajaran Ilmu Pengetahuan Alam dan Sosial (IPAS) di sekolah dasar perlu mencakup perkembangan pengetahuan, keterampilan proses, dan karakter murid secara berkelanjutan, bukan hanya berorientasi pada hasil tes tertulis. Penelitian ini bertujuan mengembangkan instrumen penilaian portofolio yang fleksibel, mengetahui kelayakan dan kepraktisannya, serta mengidentifikasi kebermanfaatannya berdasarkan persepsi guru kelas IV di SD Negeri 075027 Silima Omo. Penelitian menggunakan metode Research and Development (R&D) dengan model 4D yang meliputi tahap Define, Design, Develop, dan Disseminate. Subjek penelitian terdiri atas tiga validator ahli, satu guru kelas IV, dan 22 murid, dengan 10 murid sebagai subjek uji coba kelompok kecil. Produk yang dikembangkan berupa instrumen portofolio berbasis cetak dengan tujuh komponen terintegrasi. Hasil validasi menunjukkan skor rata-rata ahli desain 3,83, ahli bahasa 3,75, dan ahli evaluasi 4,00 pada skala empat. Persentase kepraktisan meningkat dari 62,50% menjadi 93,75%, sedangkan kebermanfaatan berdasarkan persepsi guru meningkat dari 64,29% menjadi 85,71%. Rata-rata nilai portofolio kelompok kecil mencapai 80,80. Instrumen dinyatakan layak digunakan, meskipun reliabilitas antarpenilai dan keefektifan terhadap hasil belajar masih memerlukan pengujian lebih lanjut.