Pengembangan Perangkat Pembelajaran Matematika Berbasis Model Problem Based L…

The background of this research is teachers who have difficulty in arranging learning tools based on the 2013 curriculum. This study aims to developmathematics problem-based learninglearning valid and practicaltools to facilitate mathematical communication skills in the quadrilateral and triangular material of class VII SMP. This research is development research use 4 D model stages, Those…