The purpose of this study is to analyze the content and the organization of mathematical
functions in mathematics textbooks and workbooks from the 2007 revised national curriculum
for mathematics. The mathematics textbooks and workbooks were designed for 7th grade
middle school students in 2009. Findings indicate that the mathematical textbooks had various
problem solving methods and emphasis placed on mathematical reasoning and communication.
activity of investigation for understanding concepts of mathematical functions, but there was a
need for reinforcement of authentic contexts. Mathematical textbooks have items for
representation-shift among diagrams, tables, algebraic expressions, and graphs, but the
textbooks need to emphasize more flexible connections of mathematical representations.
Furthermore, the mathematical workbooks not only seem to be appropriate for lessons on
achievement level, but they appear to be valuable to teachers for giving lessons on achievement
level. However, organization of the mathematics workbooks needs reinforcement for students\'
self-regulated learning of mathematics. Suggestions on the organization and the content of
mathematics workbooks have also been made on the basis of current research findings for
intermediate, lower level in the contents as well as the concepts for mathematics learning.
Mathematics textbooks and workbooks that help students correct their errors and that which
present useful and interesting activities should be developed.