implementation type there people meeting MATHEMATICAL applying VII SIBORO result student wa could learning research male CAR object IMPROVE mathematic academic ABSTRACT ARITHMATIC GRADES BASED cycle consisting alternative action tested subject ON categorized model study classroom implemented running observation score BILAH suggested clas NEGERI negeri end implement skill EFFORT 2018 mathematical two each PBL ending IN year average iii seen teacher problem bilah good proces SOLVING improvement analysi ability improve bila female hulu TO know 2017 concluded because STUDENTS II BEATRIX consisted test performance gained HULU 4133312013 improving take based school purpose LEARNING consist side solving enough PROBLEM THROUGH SMP observed ABILITY place