The purpose of this study is to experience the positive and significant influence of the use of Problem Posing Methods on Critical Thinking during the Learning PAK Students Class X SMA PGRI Siborongborong 2020/2021 Learning Year. The methods used are quantitative methods. The population of students in class X SMA PGRI Siborongborong approximately 392 people and a sample taken from the 22% the number of 86 people. Data were collected with a positive closed questionnaire into 33 items. The

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... of the data analysis showed that there was a positive and significant effect of the Positive Problem Method on Critical Thinking in PAK Learning as evidenced by the analytical data: a) positive correlation test found rxy value = 0.364 rtabel (a = 0.05, n = 86) = 0.213. b) Significant relationship test obtained calculation value = 3,583 ttable (a = 0.05, dk = n-2 = 84) = 2,000. c) Regression of the equation. d) Regression determination (r2) = 13.3% thus H0 is rejected and Ha is accepted.Keywords: Problem Posing Method, Critical Thinking