This research is aimed to reveal whether: (1) Computer Based
Communication material is more effective than Textbook material to teach
writing to the XI grade of SMAN 5 in the academic year of 2015/2016; (2)
the students who have high learning motivation have better writing skill
than those who have low learning motivation of the XI grade of the school;
and (3) there is an interaction between teaching materials and learning
motivation to teach writing to the XI grade of the school.
This experimental study was conducted at SMAN 5 Yogyakarta in
the academic year of 2015/2016. The population in this research is the XI
grade students of the school. The total number of population is 174 students
coming from six classes. The samples are XI IPA1 as the experimental class
and XI IPA 2 as the control class in which each consists of 30 students.
Each class was divided into two groups (the students who have high and low
learning motivation). In collecting the data, the researcher used test and
questionnaire. The data were analyzed by using Multifactor analysis of
variance ANOVA 2x2 and Tukey test.
Based on the result of analysis, there are some research findings that
can be taken: (1) Computer Based Communication material is more
effective than Textbook material to teach writing; (2) the students who have
high learning motivation have better writing skill than those who have low
learning motivation; and (3) there is an interaction between teaching
materials and learning motivation in teaching writing.
Finally, it can be inferred that Computer Based Communication
material is an effective material to teach writing for the XI grade students.
This material depends on the levels of learning motivation. Hopefully, this
research gives contribution for the students and teacher in teaching writing.
Keywords: Computer Based Communication Material, Textbook Material,
Learning motivation, Experimental study