The Develpoment of Mathematics learning Tool Oriented on Problem Based Learning to Enhance Mathematics Problem Solving Ability and Self Efficacy

problem-solving skills are essential to improving
math skills. It can increase logical, systematic, and creative skill and thinking".In high school most problem solving skill are still low, its because learning model used not exactly and the teacher haven’t preparation while teaching, so mathematics learning not interesting. it is necessary to develop learning tools to make
learning effective. researchers do development of learning tools that its student book, teacher book, Learning program plan, student worksheet and problem-solving test with the learning model used problem based learning. Expected that students problem solving ability can be increased and students are interested and love learning math, so that the learning becomes effective.This research use research improvement Thiagarajan, Semmel and Semmel by 4D model. There are 4 step development processing: define, design, develop and disseminate. Population in this research is all of student class X high school Yayasan Pendidikan Keluarga (YPK) medan school year 2016/2017 taking samples from 2 class room which totally there are 64 students and material is trigonometry. learning tools that
have been declared valid by validator. In the trial 2 stages in two different classes, the second test new results obtained that the learning tools can and easy to use can be said practical so that effectively improve the ability of problem solving and self efficacy students.