摘要：The purpose of Student worksheet development (LKS) is to create a LKS that includes four language skills and improves the professional competence of teachers in designing the learning process and making this thematic LKS a learning-specific product Indonesian language. To develop LKS researchers using models 4D include: "The definition of necessity analysis, curriculum analysis, and student analysis; Planning phase is the test preparation activity lesson study started to be done planning LKS used students, then seen; The development stage is done after the lesson study, then the spread is done in two elementary schools. The results obtained by the teacher was able to create a valid and practical LKS Indonesian language Thematic in the lesson study so that the Indonesian thematic LKS can be declared valid and the Paktis used in class V elementary School language learning Indonesia Theme 1.
