This study aims to develop a problem based learning (PBL) module on bacterial material for class X SMA. This type of research is development research. This Research and Development research used the ADDIE model which consisted of the analysis, design, and development. This research was conducted at the Laboratory of PMIPA FKIP Rian University and SMAN 2 Sentajo Raya, Kuantan Singingi in May-Dec…