| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Outline of Final Research Achievements |
In history of mathematics, before people created formal algebraic notations, numerical expressions were used to express a general aspect of arguments. Nakamura (1971) characterized those numerical expressions as“quasi-general method” to capture their nature. In this study, the term “quasi-variable” is used to express the numbers used in this manner.
The study reveals that in Japanese Lesson Study context the task design and evaluation are based on quasi-variable aspects. Furthermore, tasks are created and designed with consideration of anticipated student thinking and solutions, and are evaluated through the post-lesson discussion that follows a research lesson.
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