Abstract
High school 1st year mathematics has been considered explicitly or implicitly as a common curriculum or a common subject in Korea. Which changes have occurred in high school 1st year mathematics according to changes of national mathematics curriculum? In this paper we investigate changes of high 1st year mathematics according to changes of curriculum focused on changes of contents of algebra. For this we first analyze literature including national mathematics curriculum from the 1st national mathematics curriculum to the 2022 revised national mathematics curriculum, research reports, mathematics textbooks and so on. As the result of our analysis, we identified that high school 1st year mathematics has always played a role as a basic and common subject in view of its subject name and its place in high school mathematics curriculum for each curriculum period. And we alos identified that there were some contents of algebra, that is, sequence, exponent and logarithm, etc. included in high school 1st year mathematics and 2nd or 3rd year mathematics alternately, and other contents of algebra disappeared in mathematics curriculum. Our analysis results seem to be basic data in discussing the range of contents of common mathematics curriculum for citizens in future.
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