6. The calculation of the degree of freedom Df = N
x
+ N
y
– 2 = 34 + 33 – 2
= 65 From the calculation above, it was found that the value of t was 3.866. Then,
it was consulted to the t-table with significant level of 5 in two tails. The value of t- table of 5 with Df=65 in two tails was
. Therefore the value of t-computation was higher than the value of the t-table 3.866 2.000.
4.6 The Hypothesis Verification
Based on the result of t-test analysis on the scores of the vocabulary post test, it was known that value of t-computation was higher than the value of t-table
3.8662.000. Therefore the null hypothesis H which said: ”There is no significant
effect of using Word Cards on the seventh grade students’ vocabulary achievement at SMPN 14 Jember” was rejected. On the contrary, the alternative hypothesis H
a
which said: “There is a significant effect of using Word Cards on the seventh grade students’ vocabulary achievement at SMPN 14 Jember” was accepted. From the
analysis result, it could be stated that there was a significant effect of using Word Cards on the seventh grade students’ vocabulary achievement at SMPN 14 Jember.
4.7 Discussion
From the analysis it showed that the experimental group which was taught vocabulary by using Word Cards got better vocabulary scores than the control group
which was taught vocabulary without using Word Cards. It could be seen from the mean score of the vocabulary post test which showed that the experimental group got
higher mean score than the control group 88.482.06. Moreover, the result of the data analysis also showed that the value of the t-test was
3.866 and it was higher than the one of the t-table 2.000. It means that there was a significant effect of using
Word Cards on the seventh grade students’ vocabulary achievement at SMPN 14 Jember.
The finding was relevant to the idea suggested by Blanco and Villaneda 2008:4 that using Word Cards in a teaching learning process can create a fun and
effective way to learn. Therefore, the use of Word Cards in teaching vocabulary to the students was a good way to make the vocabulary teaching learning process more
interesting, enjoyable and effective. Furthermore, the significant effect of using Word Cards in teaching vocabulary in this research supported the previous research
results dealing with the significant effect of the use of Word Cards on teaching vocabulary. For example the research result found by Oktaviana 2012 that the use
of Word Cards can affect the seventh grade students’ vocabulary achievement effectively.
In line with the previous research finding, it was necessary to explain the similarities and the differences between this research and the previous one. Firstly,
the similarity between the previous research and this research was in the independent variable that was teaching vocabulary by using Word Cards. Secondly, the difference
with the previous research was the teaching material used. This research used descriptive text with the theme of people, while the previous research used the
functional text shopping list and procedure text. The next difference was the curriculum. This research used 2013 Curriculum, while the previous research used
KTSP. From the discussion above, it could be concluded that the use of Word Cards
was an effective media for teaching vocabulary. It was proved by the result of this research that indicated the use of Word Cards in teaching vocabulary had a significant
effect on the seventh grade students’ vocabulary achievement. It means the experimental class which was taught vocabulary by using Word Cards got better
score in the vocabulary post test than the control class which was taught vocabulary without using Word Cards.
CHAPTER 5 CONCLUSION AND SUGGESTION
This chapter presents the research conclusion and suggestions for the English teacher, the students, and the future researchers.
5.1 Conclusion
