<![CDATA[Implementing a meaningful and in-depth learning model, if delivered appropriately, in a fun way, and involving the students' active participation, will facilitate the learning process. The purpose of this study is to describe the implementation of Problem-Based Instruction in Menstruation and Istihadah Learning at Darul Ma'arif Islamic Boarding School, Tuban; the implications and obstacles to implementing Problem-Based Instruction in Menstruation and Istihadah Learning at Darul Ma'arif Islamic Boarding School, Tuban; and solutions to the obstacles to implementing Problem-Based Instruction in Menstruation and Istihadah Learning at Darul Ma'arif Islamic Boarding School, Tuban. The approach used in this study was descriptive qualitative. The results show that the implementation of Problem-Based Instruction in Fiqh Learning on Menstruation and Istihadah was carried out according to the stages and went well, starting from orientation, group division, group discussions, presentations, and reflection; the implications of its implementation include improving students' critical thinking, courage to express opinions, and increasing their inquiry skills. Meanwhile, the implementation obstacles are that it takes quite a long time and teachers provide additional stimulus several times to stimulate students' critical thinking; solutions to overcome this include learning evaluation, optimal use of facilities, building a climate of discussion, and improving literacy culture.]]>
