1. Pre test, it was given before the treatments. The test do by asking the students to write their descriptive paragraph based on the title that are provided. The scoring
based on the appropriate of steps; content, organization, vocabulary language, and mechanic. The result of this test written in the scoring column on the paper.
Example about the test is the students make descriptive used the topic about B.J Habibie.
2. Post test, it was done to know the students’ descriptive paragraph writing ability after they are taught by using Concept Mapping. The system and degree of
difficulty of post test same as pre test, so, both of them used to measure the students’ descriptive paragraph writing ability in order to know the development
of students’ descriptive paragraph writing ability after Concept Mapping is applied.
F. Research Instrument
The research instrument in this research used writing test, they were pre-test and post-test. The instrument of pre-test and post-test was to write descriptive
paragraph. In this case, the students made a descriptive paragraph and 60 minutes for time allocation. The paragraph was in present tense form and the writer was
given some topics that must be chose by students. Each student will choose one topic and write a descriptive paragraph in each test.
The topics are : a. Pre test instrument
1. B.J Habibie 2. My Class Room
3. A dog b. Post test instrument
1. My Father 2. My Hometown
3. A Cat
G. Research Procedure
The procedures of this research are as follows: 1. Determining the subject
The writer determined the subject. In this case, the writer chose the Tenth grade of SMAN 2 Liwa as the subjects of the research, one class as the
experimental class and one is control class.
2. Determining the population and sample signing the test The writer determined the instruments that was taught by students, the
instruments is descriptive paragraph writing ability. The students got the same instrument for both classes in different topics.
