Pengembangan Lembar Kerja Siswa (LKS) Berorientasi Model Pembelajaran Problem…

The Biological subject in class VIII has a fairly high level of difficulty and is closely related to everyday life. One of the class VIII are quite difficult to grasp and is closely related to life is the material excretion system. The characteristics of the material in this excretion system places emphasis on contextual learning process because of the demand to link between the subject matter…