<![CDATA[This study with Research and Development (RD) method by Borg and Gall was aimed to: (1) develop the performance assessment instrument on the practice of acid-base titration and (2) describe teachers responses of the practice-performance assessment instrument as development product. The research implementation processes were research and information collecting, planning, develop preliminary form of product, preliminary field testing, main product revision. Descriptive statistics was used for analyzing the data. The results showed that the aspect of compatibility contents, the aspect of construction, and the aspect of legibility are 83.30%, 83.00%, and 84.00%, respectively. Based on the result, it was concluded that the performance assessment instrument on the practice acid-base titration as development product has very good criteria.Penelitian ini menggunakan metode Research Development (RD) menurut Borg dan Gall yang bertujuan untuk: (1) mengembangkan instrumen penilaian kinerja praktikum pada materi titrasi asam basa dan (2) mendeskripsikan tanggapan guru terhadap instrumen penilaian kinerja praktikum yang dikembangkan. Tahap pelaksanaan penelitian ini yaitu penelitian dan pengumpulan informasi (analisis kebutuhan), perencanaan, pengembangan draf produk, uji coba terbatas, dan revisi hasil uji coba. Analisis data yang digunakan pada penelitian ini yaitu statistik deskriptif. Hasil penelitian menunjukkan persentase aspek kesesuaian isi, aspek konstruksi, dan aspek keterbacaan masing-masing adalah 83,30%, 83%, dan 84,00%. Kesimpulan penelitian ini adalah instrumen penilaian kinerja praktikum titrasi asam basa yang dikembangkan memiliki kriteria sangat baik.Kata kunci: instrumen penilaian kinerja praktikum, pengembangan, titrasi asam basa]]>
