“…Many studies have focused on the comparison of mathematics curriculum and mathematics textbooks (Baker, Knipe, Cummings, Blair, & Gamson, 2010;Cai, 2008;Cai & Ni, 2011;Fan, Zhu, & Miao, 2013;Reys, Reys, & Rubenstein, 2010;Schoen, Ziebarth, Hirsch, & BrckaLorenz, 2010;Usiskin & Willmore, 2008;Zhu & Fan, 2006). Baker et al (2010) pointed out that mathematics textbooks can be regarded as the most accountable and important historical proof for the development of mathematics curriculum, research process, and the whole mathematics education history, which can help us realize the changes in a country's mathematics education.…”