This study aims to try out the application of Polya\u27s heuristic strategy aided with students\u27 worksheet to remediate eighth grade students who experienced the error in solving problems on the material about mirror. The form of this research is Pre-Experimental with One Group Pretest-Posttest Design. The participants are all students of class VIII C who get involved in all remediation activities (28 students). The results of pre-test and post-test are compared to see the profile of Polya\u27s heuristic steps in solving the problem. The results show that there is an increase in the use of Polya\u27s heurisitic steps thus decreasing the number of students\u27 mistakes. The decline in students\u27 mistakes is calculated by using the Wilcoxon test which shows a significant reduction in errors (Zhiung = -4.58 with α = 5%; dk = 1; Ztabel = 1.645). While the effectiveness of the use of Polya\u27s heuristic strategies is calculated by proportion with the level of effectiveness is moderate (0.35). The results of this study are expected to be developed further to improve the effectiveness of remediation
