Applying Blended Learning through WhatsApp group chat to improve students’ achievement in writing analytical exposition text at SMA Negeri 1 Terbanggi Besar

The objectives of this research were to find out whether there was any improvement on students’ analytical exposition text writing achievement, and their perceptions after the implementation of blended learning through WhatsApp group chat. This research was a quantitative research which was conducted through a one group pre-test and post-test design. The subjects of this research were thirty five students in SMA Negeri 1 Terbanggi Besar. The data were collected through pre- and post-tests in the forms of analytical exposition text and a questionnaire. The data were analyzed by using Paired Samples T-Test and descriptive statistics. The students’ writing achievement were compared between the pre and the post test. The result showed that there was statistically significant improvement of the students’ writing achievement after they were taught through blended learning by WhatsApp group chat. It could be seen from the computation of Paired Samples T-Test where the T-value (8.628) was higher than t-table (2.032) with the significance level of 0.00. Therefore, their perceptions toward blended learning through WhatsApp group chat in terms of five aspects of writing were also positive. Then this research proved that blended learning is effective to be implemented in developing and improving students’ writing achievement.