数学教育における数感覚の育成に関する研究(V) : 授業原理を中心に

抄録

The purpose of this paper is to show the previous research results by the author, and to construct the principles for mathematics class to promote students' number sense. In this research, I was able to bring the activities together which became the references of number sense by using the research results in this area, but was not able to answer what the number sense was. Then, I clarified the inner nature of number sense by using phenomenology which searched for the nature of thing. Being based on these suggestions, the principles for mathematics class to promote students' number sense were constructed. By using these principles, I analyzed an actual arithmetic class. As a result, the following points became clear. First of all, in the class where the number sense is promoted, the teacher always does pay attention to make students' consideration turned to the problem solving process and their outlooks on value. And, the teacher makes the discussion among students' active by using students' surprise opinions. Simultaneously, it was also suggested that others and the class environment were important to promote number sense.