The aim of this research was to find out the effectiveness of Roundtable for teaching
descriptive writing at the seventh grades of SMP N 1 Kedungreja in academic Year of
2014/2015. This research was conducted by using stratified random sampling research. The
participants of this research were the students of SMP N 1 Kedungreja. There were two
groups choosen VII B as the experimental group and VII E as the control group. In collecting
data, this research used pre-test and post-test to get the data. The test was in the form of essay
test. The t-test formula and interrater were used to analyze the data. Based on the
computation, the result of t-test calculating was 4.48 while the t-table value at the level of
significance 0.05 for degree of freedom (df) 58 was 1.
6715. It means that t-test was higher
than t-table ( 4.48 > 1.6715). In conclusion, Roundtable was effective for teaching descriptive
writing at the seventh grade students of one Junior High School.