VALIDITY AND RELIABILITY ANALYSIS OF AN ENVIRONMENTALLY INTEGRATED SCIENCE LITERACY TEST USING RASCH MODEL

Desi Adhari; Santiani Santiani; Sri Fatmawati

doi:10.59052/edufisika.v10i1.42136

Penulis

Desi Adhari Program Studi Tadris Fisika, FTIK, IAIN Palangka Raya
Santiani Santiani IAIN Palangka Raya
Sri Fatmawati IAIN Palangka Raya

DOI:

https://doi.org/10.59052/edufisika.v10i1.42136

Kata Kunci:

Rasch Model, Literasi Sains, Lingkungan

Abstrak

Penelitian ini bertujuan untuk mengembangkan instrumen evaluasi literasi sains terintegrasi lingkungan pada materi termodinamika untuk siswa SMA. Metode dalam penelitian ini adalah R&D dengan model 4-D. Partisipan penelitian terdiri dari 34 siswa kelas XII-2 SMAN 1 Palangka Raya. Validitas ahli diukur menggunakan indeks Aiken's dengan lima validator ahli, sedangkan kualitas instrumen dianalisis menggunakan Rasch Model. Hasil penelitian menunjukkan instrumen bersifat unidimensional dengan nilai Raw Variance Explained by Measures sebesar 43,2%, yang berarti instrumen mampu mengukur aspek literasi sains sesuai yang diharapkan. Dari 16 butir soal yang dianalisis, 13 soal dinyatakan fit. Instrumen memiliki tingkat reliabel sangat tinggi dengan nilai Cronbach's Alpha 0,89, serta sebagian besar soal tidak menunjukkan bias gender berdasarkan uji Differential Item Function (DIF). Pengembangan instrumen ini diharapkan dapat membantu siswa menghubungkan konsep sains dengan kehidupan sehari-hari, meningkatkan keterampilan literassi sains, serta menumbuhkan kesadaran terhadap pentingnya pelestarian lingkungan, khususnya lahan gambut di Palangka Raya.

Unduhan

Data unduhan belum tersedia.

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