Research and Development ot leaching tor Fostering Number Sense.

本研究着眼于在学校数学中培养数感。我们回顾了美国和日本在数感研究方面的最新进展，找出了研究中的成果和存在的问题。例如，日本的数感研究侧重于数量和数量的关系，而缺乏对高年级的数感培养。在上述识别的基础上，我们详细阐述了数学教育中数感研究框架的建立。这一结果发表在日本数学教育学会2002年和2003年的年会上。我们还开发了培养数感的教学模式。在数感教学中，我们非常强调操纵和讨论的使用。开发了一个小学五年级的教学模式。该模式使用弹出式立方体进行数字培养和计算机误差计算。该模式于2003年在日本细生京海教育播出。

This research focused on fostering Number Sense in school mathematics.We had reviewed recent development in the research on Number Sense in USA and Japan, and identified results and problems in the research.For example, Japanese research on Number Sense focuses the relationship between Number and Quantities and has a lack of fostering Number Sense in upper grades.Based on the above identification, we have elaborated the establishment of research framework on Number Sense in mathematics education.This result was presented in the annual meetings of Japan Society of Mathematic Education in 2002 and 2003.We have also developed the model of teaching for fostering Number Sense.Use of manipulatives and discussion is strongly emphasized in the teaching for Number Sense.A model of teaching is developed for Fifth grade in elementary school.This model uses pop-cubes for fostering numbers and error calculation by computer.This model was broadcasted in Nihon Hoso Kyokai Educational in 2003.