The purpose of this study is to clarify the meanings and uses of Japanese words like
ittei,
onaji and
hitoshii referring to a specific relationship among concepts in science. All of these words appeared in three kinds of science textbooks for junior high school students have been collected, and analyzed for meanings in individual uses. The results are summarized as follows:
(1) Each of
onaji and
hitoshii is used in two ways.
(2) Word
ittei is used in four ways.
(3) Adjective
onaji is most commonly used to show sameness, identity or equality.
(4) There are some restrictions on their uses in accordance with characteristics of scientific terms. For example,
hitoshii is generally used to show equality or equivalency concerning scientific terms which indicate quantity or numerical value.
It has been suggested for correct scientific literacy that the meanings and uses of these words which are multivocal and of difficulty in usage, must be intentionally taught to pupils in science teaching, because these words frequently appear in science education.
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