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Hwang, Sunghwan; Yeo, Sheunghyun; Son, Taekwon – International Electronic Journal of Elementary Education, 2021
Developing textbooks of optimal quality is crucial for enriching the students' learning and understanding. This study examined fraction addition and subtraction problems in the U.S. and South Korean mathematics textbooks according to the types of denominators. In particular, we investigated Everyday Mathematics (EM) and South Korean mathematics…
Descriptors: Fractions, Addition, Subtraction, Textbook Content

Fuson, Karen C.; Kwon, Youngshim – Journal for Research in Mathematics Education, 1992
Thirty-six Korean first graders were interviewed to study their ability solving addition problems with sums of 10, single-digit sums between 10 and 18, and subtraction problems with minuends between 10 and 18. Finger methods to show sums over 10 and the regular named-10 Korean number words supported their learning of 3 efficient recomposition…
Descriptors: Addition, Concept Formation, Cultural Context, Cultural Influences