Survey of Recent Research in Elementary‐school Science Education

A Comparative Analysis of Fraction Addition and Subtraction Contents in the Mathematics Textbooks in the U.S. and South Korea

“…First, we only examined one series of mathematics textbooks in the U.S., although it has different series of mathematics textbooks. Therefore, while EM was one of the three most frequently used elementary mathematics textbooks in the U.S. (Malzahn, 2013), the findings of this study could not be interpreted as characteristics of all the U.S. mathematics textbooks. Second, we did not analyze the use of textbooks by the teachers in classrooms.…”

“…We used Everyday Mathematics 4th edition (EM; University of Chicago School Mathematics Project, 2015) for comparison with South Korean mathematics textbook (KM). The reason for such selection is that EM is supported by the National Science Foundation and is one of the three most frequently used elementary mathematics textbooks in the U.S. (Malzahn, 2013). Unlike the U.S., South Korean educational system is centralized.…”