Telah dilakukan penelitian pengembangan Lembar Kerja Peserta Didik (LKPD) berorientasi model pembelajaran Problem Based Learning (PBL) untuk melatihkan keterampilan berpikir kreatif peserta didik pada materi asam basa. Penelitian ini bertujuan untuk mengetahui validitas, kepraktisan, dan efektivitas dari LKPD yang dikembangkan. Prosedur penelitian pengembangan yang dilakukan menganut langkah pengembangan produk oleh Thiagarajan yaitu model 4-D (four-D) yang dibatasi hanya sampai dengan tahap develop (pengembangan). Kelayakan LKPD ditinjau dari aspek validitas diperoleh berdasarkan hasil penilaian validasi oleh ketiga validator yang terdiri dari dua dosen kimia dan satu guru mata pelajaran kimia. Hasil validasi oleh para ahli mendapatkan hasil penilaian sebesar 88,33% pada kriteria validitas isi dan 82,81% pada kriteria validitas konstruk dengan kategori sangat valid. Kelayakan dari aspek efektivitas ditinjau dari hasil post test keterampilan berpikir kreatif peserta didik dan diperoleh persentase Indeks Prestasi Kelas (IPK) sebesar 94,12% dengan kategori sangat tinggi serta persentase keterampilan berpikir kreatif tiap komponen yaitu berpikir lancar (fluency) sebesar 100%, berpikir luwes (flexibility) sebesar 100%, berpikir merinci (elaboration) sebesar 91,50%, dan berpikir orisinal (originality) sebesar 100% dengan kategori secara keseluruhan sangat tinggi. Kelayakan dari aspek kepraktisan ditinjau dari respon peserta didik yang mendapatkan respon positif sebesar 91,31% dengan kategori sangat praktis yang didukung dengan hasil observasi aktivitas peserta didik selama pembelajaran menggunakan LKPD diperoleh presentase pada hari pertama sebesar 98,89% dan hari kedua sebesar 97,78% dengan interpretasi sangat tinggi.
Kata Kunci : Lembar Kerja Peserta Didik (LKPD), Problem Based Learning (PBL), berpikir kreatif, asam-basa
A research had been conducted on developing Student Worksheet oriented to Problem Based Learning (PBL) for training students’ creative thinking skill in acid-base material. This study aims to determine the validity, practicality, and effectiveness of the developed Student Worksheet. The procedure of development research uses the steps of product development by Thiagarajan, it is the 4-D (four-D) model which is limited to the development stage only. The feasibility of Student Worksheet in validity aspect is obtained from the results of the validation assessment by three validators consisting of two chemistry lecturers and one chemistry teacher. The results of the validation assessment by validators are 88.33% on the criteria of content validity and 82.81% on the criteria of construct validity with a very valid category. The feasibility of effectiveness is reviewed from the post test results of students creative thinking skills and it is obtained that the Class Achievement Index is 94,12% with a very high category, also for each component as fluency got 100%, flexibility got 100%, elaboration got 91,50%, and originality got 100% with very high category for all . The feasibility of practical is based on the responses from students which had received much positive responses as 91.31% with very practical categories and also the observation result of students relevant activities during learning using Student Worksheet with the percentage of first day got 98,89% and second day got 97,78% with both in very high interpretation.
Keywords: Student Worksheet, Problem Based Learning, creative thinking, acid-base