نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسندگان English
This quasi-experimental study investigated the effectiveness of Problem-Based Learning (PBL) integrated with a STEM approach (independent variable) in enhancing mathematical critical thinking and communication skills (dependent variables) among 76 seventh-grade students (38 from an underprivileged school in Javadabad and 38 from a regular school in Tehran’s District 6) during the 2023-2024 academic year. Employing a Research and Development (R&D) methodology based on the ADDIE model, the intervention comprised a four-month curriculum focused on flat shapes, incorporating activity sheets and assessments. Data were collected through pre- and post-tests using the Watson-Glaser Critical Thinking Appraisal (Cronbach’s alpha = 0.81), a mathematical communication assessment (NCTM-based: linking objects/images to concepts, translating ideas into visuals, explaining relationships), and the Aiken attitude questionnaire (Cronbach’s alpha = 0.88; subscales: enjoyment, fear, and value of mathematics). Results demonstrated significant improvements: critical thinking scores increased from 24.91% to 73.38% (N-Gain = 0.65) in the underprivileged school and from 37.16% to 77.56% (N-Gain = 0.64) in the regular school. Mathematical communication skills improved from 19.10% to 58.85% and from 34.56% to 67.54%, respectively. Attitudinal changes were notable, with the underprivileged school showing a higher mean attitude score (M = 51.04, SD = 1.968) compared to the regular school (M = 40.36, SD = 2.464). One-way ANCOVA confirmed significant improvements in enjoyment of mathematics (F = 81.384, p < 0.001), reduced fear (F = 88.525, p < 0.001), and perceived value (F = 101.917, p < 0.001). This intervention reduced the academic performance gap by 42% and highlights the potential of STEM with project-based problems in cultivating high-level cognitive and communicative skills in diverse educational settings.
کلیدواژهها English