@article{บุรีพันธ์_อักษรวงศ์_2021, title={Effect of Problem-Based Learning on Mathematical Reasoning Abilities of Mathayom Suksa 3 Students}, volume={4}, url={https://so06.tci-thaijo.org/index.php/ubonreseva/article/view/250960}, abstractNote={<p>The purposes of this research were (1) to compare mathematical reasoning abilities of Mathayom Suksa 3 students before and after the experiment, (2) to compare the reasoning abilities between the experimeantal group and the control group, and (3) to study the students’ opinions toward using problem-based learning.&nbsp; The samples for the study were 68 Mathayom Suksa 3 students, 34 students for the experimental group who taught by using problem-based learning and the other 34 students for the control group who taught by using teacher handbook.&nbsp; The research instruments were lesson plans, mathematical reasoning abilities test, and questionnaire. The statistical procedures used for data analysis were of mean, standard deviation, t-test, and ANCOVA.</p> <p><strong>The research findings were as follows: </strong></p> <ol> <li>The mathematical reasoning abilities of the experimeantal group after participating in the problem-based learning program was &nbsp;significantly increased at .05 level.</li> <li>The mathematical reasoning abilities of the experimeantal group after participating in the problem-based learning program was higher than that of the control group at .05 level.</li> <li>The total mean scores of the students’ opinions toward the problem-based learning were high.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</li> </ol>}, number={1}, journal={Ubon Ratchathani Journal of Research and Evaluation}, author={บุรีพันธ์ ภาชิตา and อักษรวงศ์ รสวลีย์}, year={2021}, month={Aug.}, pages={22–32} }