This study aims to determine whether the application of problem solving learning strategy by using macromedia flash can improve student’s critical thinking skills on the subject two variables of linear equation (SPLDV) at class 8th Junior High School) that attended by 25 students. Data obtained from tests analyzed using descriptive statistics with five absolute scales, while data from the observation analyzed by percentage of the total aspects observed. The results showed that the critical thinking ability of students is improved. Indicated by the results of the achievement of the minimum criteria quite well in the first cycle by 40%. In the second cycle amounted to 60% in the third cycle increased to 80%.The results of the observation of teacher ability to manage by problem solving learning strategies by using macromedia flash on the first cycle get 66.4%, so it has not fulfilled the ability of teachers in the classical style 75% in the second cycle and the third cycle reached 87,5%.So that it meets the expected categories according to the benchmark.