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This study aims to determine the effect of the application of PQ4R (Preview, Question, Read, Reflect, Recite, Review) learning strategies on the mathematical problem-solving ability and confidence of students at SMAN 1 Sembakung, Nunukan Regency. The background of this research is the low ability of students to solve mathematical problem-solving problems and their lack of confidence in facing academic challenges. The PQ4R strategy was chosen because it is considered to be able to encourage active student engagement, build deep understanding, and strengthen confidence through structured learning steps. This study uses a quantitative method with a quasi-experimental design of the pretest-posttest control group design. The research sample consisted of 73 students in grade XI who were divided into experimental and control groups at random. The research instruments include problem-solving ability tests and confidence questionnaires. The data analysis technique used t-test and MANOVA (Hotelling's Trace) after meeting the normality and homogeneity tests. The results showed that PQ4R learning strategies had a significant effect on students' mathematical problem-solving skills and confidence. The experimental group experienced a higher score increase than the control group. Thus, the PQ4R strategy can be an effective learning alternative to improve the quality of mathematics learning as well as students' affective aspects such as confidence.

This study aims to determine the effectiveness of using the PQ4R (Preview, Question, Read, Reflect, Recite, Review) method in improving reading skills in elementary school children in high grades.  The research method used in this research uses qualitative methods with a literature study approach.  Research with literature or literature study is a data collection technique by conducting a review of books, literature, records and various reports related to the problem to be solved to reach a conclusion.  This study provides recommendations for educators and education practitioners to consider using the PQ4R (Preview, Question, Read, Reflect, Recite, Review) method to improve reading skills in high school elementary school children.  Proper and integrated implementation of the use of this method can be an effective alternative in developing students reading skills and creating a more meaningful learning experience in the learning process at school.  The results showed that the use of the PQ4R method (Preview, Question, Read, Reflect, Recite, Review) can significantly improve students skills in reading but there are also some drawbacks when using the PQ4R method (Preview, Question, Read, Reflect, Recite, Review).  This method relies on the performance of the brain's memory so that it can improve student understanding, because at this stage of the method carrying out reading activities repeatedly, the information obtained will stick in the students memory longer.  While this method is not effective in a small amount of time because this method requires a lot of time, especially at the read stage.