activity there outcome taught researcher meanwhile result student learning research relate significantly factor don mathematic grade rather higher significant SMA affected topic model 4810 ignore study implemented cooperate together previou suggested answer negeri implement than chapter follow following discussion SUGGESTION difference statistic conclusion XI PBL CONCLUSION balige more relevant teacher problem increased next proces some numbered ability improve pattern using observe other another concluded choice because CHAPTER may influent step question related ha NHT based try such common size solving 5738 head suggestion effect