DEVELOPMENT OF TEACHING APPROACHES TO FACILITATE MATHEMATICAL THINKING FOR THE HEARING IMPAIRED STUDENTS

近年来，人们对听障人士的高等教育提出了更高的要求。另一方面，我们还存在着许多问题，有必要解决他们的教育现状。其中之一是我们如何支持他们的学科学习。当然，在教育中，对他们来说，如何支持他们学习语言、思考或交流是最重要的问题。因为听力受损对他们来说很难做到。我们相信语言学习是非常重要的。另一方面，我们也认为支持他们的学科学习是非常重要的。因为他们需要主题学习才能积极参与到现代社会的许多领域。我们近两年的研究明确了听障人士在数学学习方面存在的一些问题。为了克服这些问题，我们提出了有效的教学方法。利用图形计算器进行循序渐进的教学是一种行之有效的教学方法。另一种方法是可视化方法。预计这些方法将是有效的，并将在聋人和听力障碍者的学校中发挥作用。

Higher education for the hearing-impaired come to be expected in recent years. The other hand we have many problems that it is necessary to solve the present state of education for them. One of them is how we support their subject learning. Of course in education for them it is the most important problem how we support them to learn language to think or communicate. Because it is very hard for them to do owing to hearing impairment. We believe language learning is very important. On the other hand we also believe it is very important to support their subject learning. Because they needed subject learning in order to participate actively in many fields of our modem society.Our research done during the past two years makes clear some problems on mathematics learning for the hearing-impaired. And we present effective teaching approaches in order to over come them. One of effective teaching approaches is step-by-step approach using graphing calculator. And another one of them is visualization approach. These approaches are expected to be effective and to be useful at school for the deaf and the hearing-impaired.