Improving students' reading comprehension by using KWL Strategy classroom action research at the second grade students of SMA Muhammadiyah 1 Karanganyar in the academic year of 2015/2016 - Sri Purwanti (Jurusan Pendidikan Bahasa Inggris Fakultas Ilmu Tarbiyah dan Keguruan IAIN Surakarta, 2016)