Key points are not available for this paper at this time.
Higher Order Thinking Skills (HOTS) is a skill demanded in 21st century. HOTS is trained in mathematics learning which one of its execution uses teaching materials such as textbook. This article aims to describe the urgency of HOTS content analysis in mathematics textbook. The results of literature review show that HOTS is one of the main goals in education and become one of the top five variables that can improve student achievement. HOTS can be developed but cannot be automated and requires practice. Textbook is one of the learning media that can be used in training HOTS because the textbook is the main learning media for teachers and students. Teacher's decisions in selecting teaching materials and strategies are also directly influenced by textbook used by teachers. Some studies even mentioned that there is a strong relationship between textbook used with student achievement. Thus, it can be said that the more HOTS content in a textbook, the greater the probability of HOTS to be trained and taught to the students. Therefore, a mathematical textbook analysis is needed to find out how the HOTS content in textbook is used by teachers and students.
Pratama et al. (Sat,) studied this question.