# 中等物理化学教育における物理量の表現とその導入法について  [in Japanese] Physical Expression and its Introduction in junior/Senior High School Education  [in Japanese]

## Abstract

Expressions (string of Arabic numerals)(space)(symbol of units), such as 2 N, 10 m and 2 g/cm^3, appear in the physical and/or chemical literature. There are two methods of operating such expressions; hereafter, one is called an arithmetical method which deals with all expressions under the rules of arithmetic; the other is called an international method in which every expression obeys the rules of quantity calculus. The former is adopted in many textbooks of Japan, and the latter is of world-wide use in international documents and textbooks in English. The present note makes four points of the argument clear such that: The expression stands for a physical quantity; the string of Arabic numerals is not a number but a numerical value; the space means a mark of multiplication; and the symbol of units denotes a physical quantity. Then a given method of operation can be regarded as international when the expressions are multiplied and/or divided directly by themselves. Whether the unit is a physical quantity or not in textbooks, is judged in terms of conversion relationships between degrees in Kelvin and Celsius. It seems that the international method has been developing gradually according to the direction of the four points, and that there is little sense of physical quantities in physical/chemical textbooks which make use of the arithmetical method. The present note hence discusses a course for teaching the four points in the physical/chemical education of the junior/senior high schools of Japan, and suggests that every physical/chemical problem should be solved step by step by use of the physical expressions.

## Journal

• Bulletin of Joetsu University of Education

Bulletin of Joetsu University of Education 19(1), 67-81, 1999-09

Joetsu University of Education

## Codes

• NII Article ID (NAID)
110000530620
• NII NACSIS-CAT ID (NCID)
AN10284863
• Text Lang
JPN
• Article Type
Journal Article
• Journal Type
大学紀要
• ISSN
09158162
• NDL Article ID
4963753
• NDL Source Classification
ZV1(一般学術誌--一般学術誌・大学紀要)
• NDL Call No.
Z22-1197
• Data Source
CJPref  NDL  NII-ELS  IR

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