Pengembangan Perangkat Pembelajaran Matematika Berbasis Problem Based Learnin…

This research is a development research (R&D) that produces a product in the form of a Problem-Based Learning-based learning tool that meets valid and practical requirements to facilitate students' mathematical critical thinking skills in class VIII SMP/MTs on Opportunity material. The development model used is the 4D model, which consists of four stages, namely (1) Define, (2) Design, (3) …