Pengembangan Instrumen Performance Assessment untuk Mengukur Keterampilan Laboratorium Peserta Didik dalam Kegiatan Praktikum Termokimia Reaksi Eksoterm dan Reaksi Endoterm

Development of Performance Assessment Instrument to Measure Student's Laboratory Skills in Thermochemistry Practicum Exothermic and Endothermic Reactions

Penelitian ini bertujuan untuk menghasilkan instrumen performance assessment yang layak digunakan untuk mengukur keterampilan laboratorium peserta didik dalam kegiatan praktikum termokimia reaksi eksoterm dan reaksi endoterm. Kelayakan instrumen performance assessment ditinjau dari validitas, reliabilitas, dan kepraktisan. Jenis penelitian yang digunakan adalah Research and Development dengan metode 4-D. Data validitas didapatkan dari penilaian validator menggunakan lembar angket validasi. Data reliabilitas didapatkan dari nilai keterampilan laboratorium peserta didik dari dua rater. Data afektifitas didapatkan dari angket respon pendidik yang diisi oleh pendidik sesudah menggunakan instrumen performance assessment. Hasil validitas menunjukkan aspek komponen isi instrumen performance assessment dinyatakan valid, aspek kelayakan penyajian dinyatakan valid, aspek kriteria fisik dinyatakan valid, aspek ilustrasi dinyatakan valid, serta aspek kebahasaan dinyatakan valid. Hasil reliabilitas berdasarkan hasil analisis reliabilitas inter-rater mendapatkan koefisien kappa sebesar 0,739 dengan derajat agreement excellent agreement. Hasil kepraktisan berdasarkan respon pendidik yang memperoleh persentase sebesar 100% dengan kriteria sangat baik. Berdasarkan hasil validitas, reliabilitas, dan kepraktisan instrumen performance assessment yang dikembangkan dinyatakan layak untuk mengukur keterampilan laboratorium peserta didik dalam kegiatan praktikum termokimia reaksi eksoterm dan reaksi endoterm.

This study aims to produce a performance assessment instrument that is feasible to use to measure students' laboratory skills in thermochemical practicum activities for exotherm and endotherm reactions. The feasibility of performance assessment instruments is reviewed from validity, reliability, and practicality. The type of research used is research and development (Research and Development) with the 4-D method. The validity data was obtained from the validator's assessment using a validation questionnaire sheet. Reliability data was obtained from student laboratory skills scores from two assessors. Affectivity data is obtained from the educator response questionnaire filled out by educators after using the performance assessment instrument. The validity results showed that the aspects of the content component of the performance assessment instrument were declared valid, the presentation feasibility aspect was declared valid, the physical criteria aspect was declared valid, the illustration aspect was declared valid, and the language aspect was declared valid. Reliability results based on the results of inter rater reliability analysis obtained a kappa coefficient of 0.739 with a degree of excellent agreement. Practicality results based on educator responses that obtained a percentage of 100% with very good criteria. Based on the results of validity, reliability, and practicality of the performance assessment instrument developed, it is declared feasible to use to measure the science process skills of students in the laboratory.