Pengembangan Perangkat Pembelajaran Berbasis Problem Based Learning (PBL) Pad…

The background of this research is due to the low of student mathematical problem solving ability. This study aims to produce a valid and practical mathematics learning tool to facilitate KPMM on the material of Transformation at IX grade junior high school students of Kuantan Singingi. Type of this research used development research that using 4-D model, namely Define, Design, Develop, and Di…