The purpose of the study was to find out whether or not Tumblr was effective to improve narrative writing achievement of the eleventh graders of SMA Methodist 2 Palembang. An experimental study, one group, pre-test post-test design was used in this study. The population of this study was all the eleventh grade students of SMA Methodist 2 Palembang, in the academic year 2012/2013. The sample of …