摘要：This study aims to increase students' motivation through cooperative learning model type Teams Games Tournament (TGT) on the redox material. The method used is classroom action research with two cycles. Samples were 10 grade students of SMAN 5 Tangerang City. Data collection techniques gained through an essay test instruments and motivation questionnaire. Data were analyzed student motivation questionnaire average value in the description and essay tests were analyzed by calculating the value of N-Gain (%). The results showed that: (1) the average value of students' motivation to learn chemistry after participating TGT cooperative learning both in the first cycle and the second cycle were increased, 73.53 (medium category) and 79.44 (high category) respectively. (2) The percentage of the average value of the N-Gain (%) in the first cycle is at 69.53 (medium category). While on the second cycle percentage of the average value of the N-Gain (%) amounted to 79.72 (high category). (3) The percentage of students who achieve the minimum criteria of mastery learning (KKM )in the first cycle of 65.79% and the second cycle of 78.95%. This shows that the cooperative learning model type Teams Games Tournament (TGT) can increase learning motivation and mastery of the concept dvof redox chemistry students.
关键词：Motivasi Belajar; Pembelajaran Kooperatif; Teams Games Tournaments (TGT); Penguasaan konsep; Redoks
