ผลของการจัดกิจกรรมการเรียนรู้ตามแนวการศึกษาคณิตศาสตร์ที่สอดคล้องกับชีวิตจริงร่วมกับการพัฒนาความคิดของเด็กที่มีต่อความสามารถในการให้เหตุผลทางคณิตศาสตร์และความสามารถในการสื่อสารทางคณิตศาสตร์ของนักเรียนระดับชั้นมัธยมศึกษาปีที่ 2

Abstract

The purposes of this research were 1) to compare the mathematical reasoning and communication ability of students learning by using organizing learning activities comprised of a realistic mathematics education approach and advancing children’s thinking between, before and after learning, and 2) to compare the mathematical reasoning and communication abilities of students between an experimental group and control group. The subjects were eighth grade students of Nawaminthrachinuthit Satriwitthaya 2 School in the first semester of the academic year 2015. There were 50 students in the experimental group and 49 students in the control group. The experimental instruments constructed by the researcher were lesson plans focusing on the organizing of learning activities using the realistic mathematics education approach and advancing children’s thinking and conventional plans. The instruments for data collection were mathematical reasoning and communication abilities tests. The results of the study revealed that 1) the mathematical reasoning and communication ability of students after learning by using the organizing learning activities using the realistic mathematics education approach and advancing children’s thinking were higher than those before the experiment at a .05 level of significance; and 2) the mathematical reasoning and communication abilities of students in the experimental group were higher than those of the students in the control group at a .05 level of significance.