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The study sought to investigate the effects of Polya’s Problem-Solving Model (PPSM) on learning achievement and analyzing ability in mathematics of fourth grade students. The sample of 32 students out of three sections was selected purposively as the subject of the study. Pretest and posttest one-group experimental design, achievement test and time series record were used to collect data. The collected data were analyzed using descriptive statistic and t-test. The t-test analysis revealed a statistical significant difference between the mean scores of in favor of posttest (M=13.78; SD=3.02) than the pretest (M=6.66; SD=2.44) at p=.00, indicating the improvement in the mathematical academic achievement using PPSM. Moreover, the time series record also showed that there was significant progression in the performances of the students after the inclusion of the PPSM. Thus, this study recommends the implementation of PPSM as an alternative method of instruction in teaching and learning of mathematical problem solving. Original Research Article Phuntsho and Dema; AJESS, 5(2): 1-8, 2019; Article no.AJESS.51542 2

Examining the Effects of Using Polya’s Problem- solving Model on Mathematical Academic Achievement and Analyzing Ability of the Fourth Grade Students