Yulianto, Rismawan; Harta, Idris (HMP Program Studi Pendidikan Matematika, Universitas Muhammadiyah Surakarta, 2017-05-14)
This study aims to determine the level of difficulty of problem solving items in mathematics books for grade X of high school students of “peminatan” program of curriculum 2013. The research method is qualitative. The ...