Abstract:
Critical thinking is one of the 21st-century skills that a person needs to have. However,
the critical thinking skills of prospective mathematics teachers are relatively low. This study analyzed the critical thinking phase of prospective mathematics teachers in solving a twodimensional geometry problem, i.e. problem analysis, exploration, drawing conclusions, clarification, and resolution phase. The subjects in this descriptive study were 35 prospective mathematics teachers. In the problem analysis phase, while some prospective mathematics teachers were able to identify what was known or asked in detail, some others were not. In the exploration phase, some prospective mathematics teachers presented ideas in solving problems in one way while others did it in various ways. The subject, who presented the idea of solving the problem in only one way, gave the final conclusion immediately. However, the subject that presented problem-solving in several ways and reviews from various perspectives can provide clarification of the problem and even convey resolution to the problem. This clarification and resolution arose because of cognitive conflicts that occur in the mind of the subject. Cognitive conflict arose because of the contradiction of the solutions to the problem when the subject used
problem-solving from a different perspective
