Pengembangan E-Lkpd Berbasis Discovery Learning Pada Materi Struktur Atom Dan…

The validity of Discovery Learning-based E-LKPD on atomic structure material and periodic system of elements using Research and Development (R&D) development research with the 4-D model (Define, Design, Develop and Disseminate) then modified 3-D (Define, Design and Develop). The data collection instruments used were validation sheets and user response questionnaires. The subjects of this …