ABSTRAK
Tujuan penelitian ini untuk : (1) mengembangkan instrumen penilaian two-tier test sebagai penilaian keterampilan proses sains yang berbasis pendekatan saintifik, (2) mengetahui karakteristik instrumen penilaian aspek kognitif two-tier test untuk mengukur keterampilan proses sains siswa yang memiliki syarat validitas, reliabilitas, tingkat kesukaran, daya beda, dan indeks pengecoh sebagai soal yang baik, (3) membuat profil siswa mengenai keterampilan proses sains sebagai bentuk laporan yang informatif dan mudah digunakan. Penelitian ini merupakan penelitian pengembangan yang terdiri dari (1) analisis pemeriksaan pendahuluan, (2) penyesuaian teoritis, (3) uji empiris, (4) proses dan hasil dokumentasi analisis refleksi. Subjek penelitian pada penelitian ini adalah guru kimia dan siswa kelas XI MIPA SMAN 4 Surakarta, SMAN 5 Surakarta dan SMA Batik 2 Surakarta tahun ajaran 2014/2015. Data penelitian diperoleh melalui wawancara, tes dan angket. Berdasarkan hasil penelitian yang telah dilakukan dapat disimpulkan : (1) instrumen penilaian two-tier test materi hidrolisis yang dikembangkan mampu mengukur keterampilan proses sains, (2) instrumen penilaian two-tier test yang dikembangkan dinyatakan layak dan memenuhi kriteria sebagai suatu soal yang baik serta memiliki karakteristik soal dengan validitas isi 0,88, reliabilitas tes 0,89, tingkat kesukaran sedang, daya pembeda pada instrumen penilaian memiliki nilai diatas 0,20, sehingga instrumen penilaian yang dikembangkan dapat digunakan, karena dapat membedakan peserta tes dengan baik dan indeks pengecoh sudah berfungsi dengan baik. (3) profil siswa yang dikembangkan merupakan sarana yang informatif untuk mengetahui tingkat pemahaman siswa serta mengetahui keterampilan proses sains yang dimiliki siswa. Kata Kunci: penelitian dan pengembangan, two-tier test, keterampilan proses sains, hidrolisis garam, profil siswa
ABSTRACT
This research is aimed: (1) to develop two-tier test assesing instrument as an assessment of science skill process based on the scientific approach, (2) to know the characteristics of two-tier test of cognitive aspect instrument to measure students’ science skill process which have the requirements of validity, reliability, difficulty index, discrimination power, and distracters index as a good item, (3) to create students’ profile about science skill process as a form of informative and usable report.
This research is a development research which consists of analysis of (1) preliminary investigation, (2) theoretical embedet, (3) empirical test and (4) process and result of reflection analysis documentation. The subject of this research is chemistry teachers and students of class XI Science SMAN 4 Surakarta, SMAN 5 Surakarta, and SMA Batik 2 Surakarta in the academic year of 2014/2015. The research data were obtained through interview, test, and questionnaire.
According to the research results has been conducted, it can be concluded that (1) two-tier test assesment instrument in hydrolysis material which is developed can measure science skill process, (2) the developed two-tier test is eligible and fulfil the criteria as a good item and its validity is 0.88, it has test reliability average of 0.89 which is categorized as high reliability, moderate difficulty index, and the discrimination index of assesment instrument is more than 0.20, so assesment instrument which is developed can be used because it can differentiate test takers well, and distracter index has worked well, (3) students’ profile developed is an informative media to know students’ understanding and to know students’ science skill process.
Keywords: research and development, two-tier test, science skill process, hydrolysis, students’ profile.