Schools today face the challenge of preparing students to live, work, and prosper in a rapidly changing world. As a response to this global challenge, Norway has adopted a national curriculum focusing on the development of 21 st -century skills. In this study, we investigate if and how the tasks in science and language arts textbooks in upper-secondary school have changed after the curriculum reform. We conduct a content analysis of 5,067 tasks in science and language arts textbooks and compare them to tasks in textbooks published before the reform, which we analysed in two previous studies. The results show only a marginal change in tasks in each subject, indicating that the tasks do not present the students with sufficient opportunities to practice the competences highlighted in the new curriculum. As a possible explanation regarding why textbook tasks in Norway-as well as a number of other countries-appear to change so little over time, we advance the hypothesis that the formulation of tasks in textbooks is influenced and constrained by culturally specific genre norms. These norms may represent a challenge to curriculum implementation and school change, and it is therefore important to raise awareness of textbook tasks.
KEYWORDSTextbook; task; genre; curriculum reform First, a person will acquire information -facts, concepts, principles, solutions -involved in the particular task that is accomplished. Second, a person will practice operations -memorizing, classifying, inferring, analyzing -used to obtain or produce the information demanded by the task. (p. 162) A major source of tasks for both classroom activities and homework is the textbook (Gracin, 2018;Johansson, 2006). A textbook typically contains hundreds of tasks, while for textbooks in some subjects, such as mathematics and science, the number of tasks can be greater than one thousand (Andersson-Bakken et al., 2020;Gracin, 2018).If tasks, as Doyle claims, are closely linked to both what students learn in a school subject and how the students learn while studying that subject, one could expect that when the curriculum changes, so will the textbook tasks. Previous research on textbook tasks, however, shows that the types of tasks commonly used in a particular school subject remain more or less the same decade after decade (Gracin, 2018;Limberg, 2016;W. Yang et al., 2019). Furthermore, the information that students can acquire and the operations they practice when working on commonly used textbook CONTACT Jonas Bakken,