The main objective of this study is to find out whether there is or not a significant difference of student’s mastery in reading descriptive text achievement between students who taught by using TGT (Teams Games Tournament) and those who taught by using explanation only. In this research, the population is the seventh grade of MTs N Keling in academic year of 2015/ 2016. In taking the sample, the writer used cluster random sampling technique. Class VIII B was chosen as a try out class, VII A as experimental class and class VII F as control class. Treatment for experimental and control class were twice.
The instruments which are used to collect the data are tests and documentation. The technique to analyze the data is t-test formula. The average of post-test in experimental class is 73.967, which is higher than the average score of post-test in control group (69.613). The t-test shows that tcount = 2.081 is higher than ttable = 1.671. It means that Ha is accepted and H is rejected. Since the tcount is higher than the ttable, there is a significance difference in the achievement between students in class VII A who are taught descriptive text reading through the use of teams games tournament and students in class VII F who are taught descriptive text reading without using teams games tournament.
It is hoped that the result of the study can be useful for teachers to determine and select the suitable teaching method for their students so that they can obtain an optimum result of reading achievement.