VALIDITAS DAN RELIABILITAS INSTRUMEN PENILAIAN KINERJA PRAKTIKUM PADA MATERI ALAT OPTIK KELAS XI SMA
VALIDITY AND RELIABILITY INSTRUMENTS PERFORMANCE ASSESSMENT OF PRACTICUM OF SMA XI OPTICAL INSTRUMENTS
Kurikulum 2013 menekankan peserta didik memiliki kompetensi dalam melakukan penyelidikan ilmiah Penilaian autentik terhadap kompetensi keterampilan peserta didik dapat dilakukan melalui penilaian kinerja. Tujuan penelitian ini adalah untuk menentukan kelayakan instrumen penilaian kinerja yang dikembangkan dengan model ADDIE terbatas dalam tahapan Analysis, Design dan Development ditinjau dari aspek validitas teoritis dan reliabilitas pada materi Alat Optik Kelas XI SMA. Penentuan validitas teoritis instrumen penilaian kinerja praktikum dilakukan dengan validasi oleh 2 dosen ahli Fisika Universitas Negeri Surabaya dan 1 Guru Fisika SMAN 3 Sidoarjo. Jenis penelitian ini adalah penilitian deskriptif-kuantitatif. Teknik analisis data yang dilakukan menggunakan statistik deskriptif. Pada penelitian ini instrumen yang dikembangkan adalah instrumen penilaian kinerja praktikum pada Alat Optik. Indikator penilaian validitas teoritis meliputi: 1) validitas isi 2) validitas konstruk dan 3) validitas bahasa. Penilaian validitas teoritis menggunakan skala Likert dan reliabilitas instrumen didasarkan pada tingkat persentase kecocokan oleh 3 validator dengan menggunakan percentage of agreement. Hasil analisis menunjukkan bahwa persentase validitas isi sebesar 88%, validitas konstruk sebesar 87%, dan validitas bahasa sebesar 96%. Reliabilitas instrumen berada pada kriteria reliabel dengan persentase validitas isi sebesar 91,25%, validitas konstruk sebesar 91,6%, dan validitas bahasa sebesar 93%. Berdasarkan hasil analisis pada validitas isi, konstruk dan bahasa maka dapat disimpulkan bahwa instrumen yang dikembangkan layak digunakan dengan kriteria sangat valid dan reliabel. Instrumen penilaian kinerja yang dikembangkan dapat digunakan dalam pembelajaran Fisika pada materi Alat Optik Kelas XI SMA.
Kata Kunci: Validitas teoritis, reliabilitas, penilaian kinerja praktikum.
The 2013 curriculum emphasizes students having competence in conducting scientific investigations Authentic assessment of students' competency skills can be done through performance assessments. The purpose of this study is to determine the appropriateness of performance appraisal instruments developed with the limited ADDIE model in the Analysis, Design and Development stages in terms of the theoretical validity and reliability aspects of the Class XI High School Optical Instrument material. Determination of the theoretical validity of practical performance appraisal instruments was carried out with validation by 2 Physics lecturers from Surabaya State University and 1 Physics Teacher at SMAN 3 Sidoarjo. This type of research is descriptive-quantitative research. Data analysis techniques were performed using descriptive statistics. In this study, the instrument developed was the instrument for evaluating the practicum performance of optical instruments. Indicators of theoretical validity assessment include: 1) content validity 2) construct validity and 3) language validity. Theoretical validity assessment using a Likert scale and the reliability of the instrument is based on the level of percentage of compatibility by 3 validators using a percentage of agreement. The analysis showed that the content validity percentage was 88%, construct validity was 87%, and language validity was 96%. Instrument reliability is on the reliable criteria with a percentage of content validity of 91.25%, construct validity of 91.6%, and language validity of 93%. Based on the results of the analysis on the content validity, constructs and language, it can be concluded that the instrument developed is suitable for use with very valid and reliable criteria. The performance appraisal instruments developed can be used in physics learning in high school grade XI Optical Instrument materials.
Keywords: Theoretical validity, reliability, performance assessment of practicum.