THE EFFECT OF POW+TREE STRATEGY ON STUDENTS’ ABILITY IN WRITING HORTATORY EXPOSITION TEXT

This study deals with the effect of POW+TREE Strategy on students’ ability in
writing hortatory exposition text.. The problem of the study is to find out whether
POW+TREE Strategy significantly affects students’ ability in writing hortatory
exposition text or not. This study was conducted by using experimental design. The
population of the study was the students of eleventh grade of SMA Methodist 8
Medan in the academic year 2015/2016, there were 3 parallel classes of grade XI.
There were two classes selected to be sample. The Experimental group (XI IPA-2)
was taught by applying POW+TREE Strategy, while the Control group (XI IPA-1)
was taught by applying conventional strategy. The data of the study was obtained
from the students’ scores of writing test. There were two kinds of test used in this
study. They were pre-test and post-test. The data were analyzed by applying t-test
formula. After analyzing the data, the result of the study showed that t-observed
(2.338) was higher than t-table (1.994) (t-observed > t-table) at the level of
significance of p = 0.05 and the degree of freedom (df) = 68. It can be concluded that
applying POW+TREE strategy significantly affects students’ ability in writing
hortatory exposition text, or in other words, the null hypothesis is rejected , therefore
the alternative hypothesis is accepted.