@article{Moothummachai_Kamol_2020, title={PROMOTING MATHEMATICAL REASONING ABILITIES BY USING MATHEMATICAL TASKS: CLASSROOM ACTION RESEARCH}, volume={22}, url={https://so06.tci-thaijo.org/index.php/edujournal_nu/article/view/101211}, abstractNote={<p style="text-align: left;" align="center">This classroom action research was aimed at promoting mathematical reasoning abilities in relations and functions by using mathematical tasks. The target group included forty grade 10 students enrolled in the 2nd semester of 2016 academic year at Sanpatongwittayakom School. The research was conducted along the 4 steps of continuous 3 cycles of classroom action research, namely, Plan, Act. Observe, and Reflect. The research instruments were 10 mathematical task-based learning plans, post instruction reflecting notes, an eight-item subjective test on mathematical reasoning ability, and VDO recording. The data were analyzed in terms of classification, mean, and standard deviation. The results showed that the students had higher level of reasoning abilities</p>}, number={2}, journal={JOURNAL OF EDUCATION NARESUAN UNIVERSITY}, author={Moothummachai, Nirawan and Kamol, Natcha}, year={2020}, month={Feb.}, pages={135–146} }