PENGEMBANGAN LEMBAR PENUGASAN TERSTUKTUR (LPT) PADA MATERI LAJU REAKSI UNTUK MELATIHKAN KETERAMPILAN PEMECAHAN MASALAH

DEVELOPMENT OF STRUCTURED ASSIGNMENT SHEET ON REACTION RATE MATERIALS TO TRAIN PROBLEM-SOLVING SKILLS

Penelitian ini bertujuan untuk mengetahui kelayakan dari Lembar Penugasan Terstruktur (LPT) pada materi laju reaksi untuk melatihkan keterampilan pemecahan masalah siswa ditinjau dari kriteria validitas, kepraktisan, dan keefektifan. Metode yang digunakan pada penelitian ini adalah Research and Development (R&D). Instrumen yang digunakan adalah lembar validasi, angket respon siswa, dan lembar tes keterampilan pemecahan masalah. LPT yang dikembangkan diujikan kepada 15 siswa kelas XI yang sudah mendapatkan materi laju reaksi di SMAN 1 Manyar dan SMA Assa'adah Bungah. Validitas LPT diperoleh berdasarkan penilaian dari dua dosen kimia Universitas Negeri Surabaya dan dua guru kimia di SMAN 1 Manyar dan SMA Assa'adah Bungah, diperoleh prosentase validitas isi sebesar 92% dan validitas konstruk sebesar 90%, keduanya termasuk dalam kategori sangat valid. Kepraktisan LPT didapatkan melalui respon siswa, dengan respon positif sebesar 100% dan termasuk dalam kategori sangat praktis. Efektivitas LPT diperoleh melalui skor N-Gain sebesar 0,8 dengan kriteria tinggi. Hal ini menunjukkan bahwa LPT-KPM yang dikembangkan sesuai untuk digunakan dalam proses pebelajaran.

Kata Kunci : Lembar Penugasan Terstruktur (LPT); Keterampilan Pemecahan Masalah (KPM); Laju Reaksi.

This study aims to determine the feasibility of a Structured Assignment Sheet (SAS) on the reaction rate material to practice student Problem-Solving Skills (PSS) in terms of validity, practicality, and effectiveness criteria. The method used in this research is Research and Development (R&D). The instruments used were validation sheets, student response questionnaires, and problem-solving skills test sheets. SAS that developed was tested on 15 students of XI grade who had received material on reaction rates at SMAN 1 Manyar and SMA Assa'adah Bungah. The SAS's validity was obtained based on the assessment of two Chemistry lecturers of Universitas Negeri Surabaya and two chemistry teachers at SMAN 1 Manyar and SMA Assa'adah Bungah. The validity has obtained a percentage of content validity of 92% and constructs validity of 90%, both of them were included in the very valid category. The practicality of the SAS was obtained through student responses. It obtained a positive response of 100% in the very practical category. The effectiveness of SAS was obtained through an N-Gain score of 0.8 with high criteria. That shows that the SAS-PSS developed is suitable for use in the learning process.

Keywords: Structured Assignment Sheet (SAS); Problem-Solving Skills (PSS); Reaction Rate.