Penelitian pengembangan dilakukan untuk menganalisis dan mengembangkan produk Lembar Kegiatan Peserta Didik (LKPD) Berbasis Saintifik Mata Pelajaran Layanan Lembaga Keuangan Syariah Kelas XI Semester 1 Kompetensi Keahlian Perbankan Syariah dengan model pengembangan 4D. Model Pengembangan 4D terdiri dari design, define, develop dan disseminate, namun tahap disseminate tidak dilakukan karena hanya fokus pada pengembangan dan waktu yang dibutuhkan terbatas. Sasaran yang dituju sebagai subjek penelitian yaitu 20 peserta didik perbankan syariah di SMK Negeri 1 Lamongan. Dalam penelitian menggunakan instrument penelitian berupa lembar telaah, lembar validasi dan lembar respon peserta didik. Hasil yang didapatkan presentase ahli materi pada kelayakan isi sebesar 78,84% dengan kriteria layak, kelayakan penyajian 80% kriteria layak, ahli bahasa sebesar 80% kriteria layak, dan ahli grafis 92,2% kriteria sangat layak, serta respon peserta didik sebesar 88,1% kriteria sangat memahami. 

Development research was carried out to analyze and develop products Development of Activities Sheets Student (LKPD) Based Learning Scientific Approach Subject of Sharia Financial Institutions Services Class XI Semester 1 Competency of Expertise of Sharia Banking with 4D development model. The 4D Development Model consists of design, define, develop and disseminate, but the disseminate stage is not done because it only focuses on development and the time needed is limited. The intended target is the subject of research, namely 20 sharia banking students at SMK Negeri 1 Lamongan. In the study using research instruments in the form of study sheets, validation sheets and response sheets of students. The results obtained by the percentage of material experts on content eligibility amounted to 78.84% with feasible criteria, 80% feasibility of presentation criteria, 80% linguists were eligible criteria, and 92.2% graphic experts very feasible criteria, and 88,1%  responses of students criteria are very understanding.