A Method of Adopting a Concrete Object and an Abstract Concept Seen Through Elementary School Math Textbooks in Our Country and Finland - Focusing on the Curriculums of the 5th·6th Grades -
2018 ◽
Vol 18
(13)
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pp. 387-408
2021 ◽
Vol 21
(20)
◽
pp. 325-346
2010 ◽
Vol 3
(3)
◽
pp. 199-253
◽