PENGEMBANGAN INSTRUMEN LITERASI SAINS BERBASIS PISA MENGGUNAKAN TWO-TIER MULTIPLE CHOICE
DOI:
https://doi.org/10.51878/educator.v6i4.15864Keywords:
kimia hijau, literasi sains, PISA, two-tier multiple choiceAbstract
Scientific literacy remains a challenge in chemistry learning, particularly because assessment instruments do not sufficiently measure scientific knowledge and reasoning in real-life contexts. This study aimed to develop and analyze the quality of a PISA-based scientific literacy instrument using the two-tier multiple choice format on green chemistry. The study employed a development method consisting of test design, trial testing, and final test preparation, adapted from the Wilson, Oriondo, and Antonio model. Content validation was conducted by two experts, followed by a trial involving 30 tenth-grade students at SMAN 10 Makassar. The analysis covered item validity, reliability, difficulty level, and discrimination index. The validation results indicated that all assessed aspects were categorized as highly valid, with mean scores ranging from 3.67 to 3.84. A total of 16 Tier 1 items and 15 Tier 2 items were valid, with reliability coefficients of 0.798 and 0.799, respectively. Most items had moderate difficulty levels, while their discrimination indices were predominantly good to very good. Therefore, the developed instrument met the criteria of a quality assessment instrument and was suitable for measuring students' scientific literacy in green chemistry.
ABSTRAK
Literasi sains peserta didik masih menjadi tantangan dalam pembelajaran kimia, terutama karena instrumen evaluasi belum banyak mengukur pengetahuan sekaligus penalaran ilmiah dalam konteks kehidupan nyata. Penelitian ini bertujuan mengembangkan dan menganalisis kualitas instrumen literasi sains berbasis PISA menggunakan two-tier multiple choice pada materi kimia hijau. Penelitian menggunakan metode pengembangan dengan tahapan perancangan tes, uji coba, dan penyusunan bentuk akhir yang dimodifikasi dari model Wilson, Oriondo, dan Antonio. Validasi isi dilakukan oleh dua ahli, kemudian instrumen diujicobakan kepada 30 peserta didik kelas X.I SMAN 10 Makassar. Analisis meliputi validitas butir, reliabilitas, tingkat kesukaran, dan daya pembeda. Hasil validasi menunjukkan seluruh aspek berada pada kategori sangat valid dengan skor rata-rata 3,67–3,84. Sebanyak 16 butir Tier 1 dan 15 butir Tier 2 dinyatakan valid, dengan reliabilitas masing-masing 0,798 dan 0,799. Tingkat kesukaran didominasi kategori sedang, sedangkan daya pembeda sebagian besar berada pada kategori baik hingga sangat baik. Dengan demikian, instrumen yang dikembangkan memenuhi karakteristik instrumen tes yang baik dan layak digunakan untuk mengukur literasi sains peserta didik pada materi kimia hijau.
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