Ririn Ambarwati, 2201407099 (2011) The Effectiveness of Tree Diagram Technique as a Means of Teaching Writing (An Experimental Study of the Eleventh Grade Students of SMA Negeri 2 Bae Kudus in the Academic Year of 2010/2011). Under Graduates thesis, Universitas Negeri Semarang.

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Abstract

Ambarwati, Ririn. 2011. The Effectiveness of Tree Diagram Technique as a Means of Teaching Writing (An Experimental Study of the Eleventh Grade Students of SMA Negeri 2 Bae Kudus in the Academic Year of 2010/2011). Final Project. English Department. Faculty of Languages and Arts. Semarang State University. Supervisor: I. Drs. Suprapto, M. Hum. II. Drs. Amir Sisbiyanto, M. Hum. Key words: writing, tree diagram, experimental study. This final project entitled “The Effectiveness of Tree Diagram Technique as a Means of Teaching Writing” is an experimental research, which is intended to improve the students’ ability in writing through tree diagram technique. The subjects of the experiment were the students of grade XI IPA 3 of SMA Negeri 2 Bae Kudus as the experimental group and the students of grade XI IPA 2 as the control group. The research was conducted in the even semester of the academic year of 2010/2011. This research was held in six meetings for both the experimental group and the control group. Four of the six meetings were devoted to the treatment of using tree diagram technique. In the first meeting, the writer gave explanation about tree diagram to the experimental group. Then, in the next meetings the writer discussed how the tree diagram could be conducted. In the fourth meeting, the students were asked to practice using tree diagram. Meanwhile, to the control group, the writer gave explanation about genres and grammar without using tree diagram technique or any special treatment. After accepting the treatment, in the last meeting both groups were doing their posttest. The test was used to know the writing development between the two groups. The result of pretest showed the average score of the experimental group is 78.2, while the average score of the control group is 77.7. Meanwhile, the result of the posttest revealed that the average score of the experimental group is 88, while in the average score of the control group is 82.3. The difference in writing scores of the experimental group and the control group is 5.2. It showed that the average score of the experimental group is higher than that of the control group. Using t-test, the calculated t value was found 6.352. It is higher than the t-table value which is 1.998. From the calculation, it can be said that there is a significant difference of means between the experimental group and control group. From the result of this study, the writer concludes that the students improve their ability of writing effectively through the use of tree diagram technique. Furthermore, with this technique the students are able to develop their ideas into a good essay. Moreover, the writer would like to offer some suggestions. Besides, their routine techniques, the teachers are suggested to use other techniques as well, especially tree diagram technique.

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