is 20.39. It means that   count   (20.39)   >   ttable   
(1.99).   It   can   be concluded that H0 is rejected 
and Ha is accepted. In  other words,  there is a 
statistically significant improvement in students' 
score in speaking skills. 
5.3  The Result of the Gain Score 
Table 5: Result of Gain Score 
No  Aspect  Score 
1  Experimental Group  0.56 
 
Based on the table, index gain score is 0.56. It 
means that the score is between 0.30–0.70 (0.30< 
056<0.70)    with    medium    category.    Therefore,   
the improvement  of  the  students’  speaking  skill 
using vlog is in the medium category.
 
6 CONCLUSION 
There is significance difference improvement when 
the students were given the treatment of using vlog 
to improve their speaking skills. This session is 
determined   by   the   improvement   of   students' 
speaking skills after treatment by testing the index 
gain. Testing the index gain has been analyzed 
before. Based on the analysis, index gain score is 
0.36. It is located between 0.31 – 0.70 with the 
medium category. So, the improvement of students' 
speaking skills using vlog is medium. 
In this conclusion, after conducting the 
research,
 
the observer  concluded  that vlog  is  an  important 
media to help students in teaching learning process, 
especially in teaching speaking. It has proved by the 
statistical  data explained  above that the vlog can 
improve students' speaking skills with the medium 
category in its improvement. 
In addition, the use  of  vlog  as  a  media  is 
effective to improve students speaking skills, by 
using vlog students feel comfortable because they 
saw the real activity that the vlogger exposed in their 
personal journal. Besides the students as a viewer 
can get benefits such as vocabularies, pronunciation, 
expression, and else. Students can be able to imitate 
how to say something in the foreign language 
through exposed vlog. It made students more 
interested than watch other videos because the 
vloggers showed the real activity which the video 
was edited by added emotions, made sequences part 
of activities, music, so that students do not get bored 
during vlog was playing. Another conclusion for the 
future researcher is to make a vlog as a product that 
can make students  can  be  involved  directly  in 
making  the  vlog  and  we  can  see  in  the  students' 
development of their speaking skills. 
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