“…Thereby, reading and reading comprehension could be more explicitly included in mathematics education, in the teaching as well as examinations, and some argue it should be included (Cowen, 1991;Fuentes, 1998;Krygowska, 1969). However, there seems not to be much research done about the more detailed use of mathematical texts in learning situations (Fenwick, 2001;Love and Pimm, 3 1996), but more research that focuses on other aspects of mathematics textbooks (see Turnau, 1983). For example, in the Swedish research community there are studies about the solving of textbook exercises (Lithner, 2004), about the role of the textbook as a part of the curriculum (Johansson, 2003), and about differentiation in mathematics textbooks (Brändström, 2005).…”