students’ errors in solving critical thinking problems on linear programingtopics

Science and technology were growing more rapidly in the industrial revolution 4.0 era. studentsmust have some critical ability to deal with it. one of them is the ability to think critically. criticalthinking ability is the ability to use thinking skills to make reasonable decisions. critical thinking skillscan be developed through learning mathematics. this paper aims to identify and analyze students' error insolving problems that require critical thinking skills on the topic of linear programming. data in thispaper were collected using critical thinking skills tests and interview. the research method used isdescriptive qualitative. the subjects in this paper were senior high school students in palangkaraya. fourindicators of critical thinking skills used to analyze students' error. the results of the paper show thesubject making several mistakes in solving problems. some students make the same mistakes, somestudents can solve all problems even though the method used is not right, and the shape of the questionsinfluences students' critical thinking ability.