I WAYAN LABA, The Effect of Task Recitation Method and Achievement Motivation upon Achievement in Mathematics at SMA Negeri 1 Manggis, Tesis Program Studi Penelitian dan Evaluasi Pendidikan, Program Pascasarjana (PPs) Universitas Pendidikan Ganesha Singaraja, 2010. This thesis has been corrected and examined by the first supervisor, Prof. Dr. I Made Candiasa, MI Komp, the second supervisor, Prof. Dr. Ni Ketut Suarni, MS Key words: task recitation, achievement motivation and learning achievement This study aimed at finding out the effect of task recitation and achievement motivation upon student's learning achievement in mathematics. This study was conducted at SMA Negeri 1 Manggis by using experimental method with 2x2 factorial design. The independent variable in this study consisted of learning method which was classified into two types, i.e., task recitation method which was applied to the experiment group and conventional method to the control group. Achievement motivation served as moderator variable which was classified into two, namely high achievement motivation and low achievement motivation. The dependent variable consisted of learning achievement in mathematics. The instruments were in the form of questionnaire that was used to measure the students' achievement motivation and objective test that was used to measure the students' learning achievement in mathematics. The sample consisted of 62 students of Class X who were selected by random sampling. The data analysis used two-way analysis of ANOVA and Tukey test. The results showed that 1) the students who learned through recitation method had higher achievement than those who learned through conventional method, Fobserved= 8.960 Ftable = 3.99 at 5% level of significance; 2) among the students who had high learning motivation, those who learned through recitation method had higher achievement than those who learned through conventional method, Qobserved = 9.3007, Qtable = 3.89 at 5% level of significance; 3) among the students who had low learning motivation, those who learned through recitation method had lower achievement than those who learned through conventional method, Qobserved = 3.3140, Qtable = 2.89 at 5% level of significance; and 4) there was an interaction effect between learning method and learning motivation upon learning motivation in mathematics, Fobserved = 39.783 Ftable = 3.99 at 5% level of significance. Hence, it can be concluded that task recitation method and learning motivation have a significant effect upon learning achievement in mathematics at SMA Negeri 1 Manggis