Penelitian ini bertujuan mengembangkan Lembar Kegiatan Siswa berdasarkan kelayakan secara teoritis. Kelayakan LKS secara teoritis berdasarkan: 1) isi, kebahasan, penyajian, kegrafikan; 2) kesesuaian dengan sintaks model inkuiri terbimbing untuk melatihkan kemampuan literasi sains. Teknik penelitian ini adalah deskriptif kuantitatif dan rancangan penelitian menggunakan One-Shot Case Study. Prosedur mrnggunakan metode Research and Development (R&D) Sukmadinata (2012). LKS berorientasi inkuiri terbimbing untuk melatihkan kemampuan literasi sains pada sub materi faktor-faktor yang mempengaruh pergeseran arah kesetimbangan kimia dipergunakan sebagai bahan ajar sesuai syarat kelayakan teoritis yaitu: kelayakan isi dengan persentase 87,18% kategori sangat layak; kelayakan kebahasaan dengan persentase 82,22% kategori sangat layak; kelayakan penyajian dengan persentase 88,05% kategori sangat layak; kelayakan kegrafikan dengan persentase 90,00% kategori sangat layak; kelayakan kesesuaian dengan sintaks model inkuiri terbimbing untuk melatihkan kemampuan literasi sains dengan persentase 80,00% kategori layak. Kata Kunci: LKS, Literasi Sains, Kesetimbangan Kimia This study aims at developing Students’ Worksheet (LKS) based on theoretical feasibility. The feasibility of students’ worksheet is theoretically reviewed based on: 1) criteria of the content, language, presentation, graphs; 2) conformity with the guided-inquiry syntax to train science literacy. This research employs descriptive quantitative method and One-Shot Case Study. The research procedures refer to the Research and Development method (R & D) Sukmadinata (2012). Guided-inquiry oriented students’ worksheet is intended to train the ability of science literacy on the sub-material of factors that influences the direction of chemical equilibrium shift used as teaching materials because it has fulfilled the following theoretical feasibility requirements: the content feasibility gets 87,18% which means very feasible; language eligibility earns 82.22% falls to proper category; The feasibility of the presentation reaches 88.05% classified as decent category; the feasibility of graph obtains a 90.00% which means very viable; the feasibility of conformity with the syntax guided-inquiry model to train the science literacy ability gets 80.00% with the appropriate category. Keywords: Worksheet, Science Literacy, Chemical Equilibrium
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