Özet:

Writing is very important to master in order to make students into communicative language users. To equip students with good writing skills requires an effective learning model. This paper aims to describe the effect of the implementation of problem-based learning (PBL) model on the ability to write text discussion of students on learning Indonesian. The research method used is quasi experimental method of design pretest-posttest control group design. The population of this research is eighth-grade in one of the secondary schools in Indonesia. The data were obtained using four kinds of data collection methods, namely interview, test, observation, and questionnaire.  This paper describes 1) the learning profile of writing discussion text in eighth-grade 2) the implementation process of problem-based learning model in writing discussion text on learning Indonesian in experiment class 3) a significant difference between the ability to write the text of the discussion of eighth-grade in one of the secondary schools in Indonesia using a problem-based learning model in the experimental class and the model of the learning process in the control class. The results showed a significant difference between the students 'writing ability in the experimental class with the ability to write the students' discussion text in the control class. The implication of the implementation of this PBL model is that students in the experimental class can (1) build motivation and confidence when writing; (2) able to pour his ideas in writing systematically, ranging from defining problems, finding and processing information relating to the problem and then provide solutions to the problems at hand; (3) able to develop social skills through: sensitivity to solve problems, work in teams to exchange ideas, and correlate writing with friends; and (4) write in correct and communicative Indonesian Language.

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