This study aims to discuss the effectiveness of learning inquiry based learning model in improving the learning of Indonesian junior high school students in Sabbangparu District. The data collected in this study, carried out through two cycles. Research subjects were teachers and students of class VIII with a total of 32 students, consisting of 20 males and 12 females. The result of learning analysis after applied inkuiri model in class student of SMP Negeri 2 Sabbangparu Wajo Regency that is at student prasiklus stage which complete with value more than 75 counted 0 student with percentage of 100 percent unfinished. In the first cycle, the students learning achievement increased, that is 20 students with 63 percent complete percentage of study with a value of  more than 75. In cycle II also an increase that is a complete student with a value of more than 75 as many as 28 students with 88 percentage. So complete students learn to increase from 68 percent to 88 percent. Based on the results of the research, it can be concluded that the application of inquiry model effectively improves the learning of Indonesian junior high school students in Sabbangparu subdistrict, especially on the matter of writing argumentation text. After the existence of the research, it is suggested that teachers should always supervise the class to motivate students' activeness and provide individual and group guidance. Keywords: Effectiveness, Inquiry, Students, Sabbangparu

The purpose of this study was to describe the form of compliance and deviation of the principle of language politeness as well as the level of language politeness in the textbooks were focused on Bahasa Indonesia textbook of SMA, MA, SMK, MAK Class 10 Curriculum 2013 Revised Edition 2016 by Suherli etc. The method used in this study was quantitative descriptive method by using reading and recording as data collecting technique. Data analysis was done by using matching method. The determination of the form of complience and deviation of the principles of language politeness refered to the theories of politeness and Leechs politeness principles. While the the level of politeness was calculated based on the tendency compliance and deviations on the principle of language politeness. The results showed that there were 211 speech either obey or deviate to the principle of politeness. The obedience amounted to 157 speech, consisting of 63 maxims of wisdom, 6 generosity maxims, 18 reward maxims, and 70 maxim of consensus. The deviation of the principle of language politeness had a lower proportion of 54 speech, consisting of 52 maxims of wisdom, and 2 maxims of appreciation. Level of discourse politics contained in textbooks Indonesian SMA, MA, SMK, MAK Class 10 Curriculum 2013 revised edition 2016. It can be seen from the compliance rate having 74.4 percent, percentage which is in the range of 61percent to 80 percent with the polite category, and the deviation has the percentage of 25.6 percent which is in the range of 21 percent to 40 percent with the polite category. Keywords: Compliance, Deviation, Modesty, Discourse, Textbook.