A Content Analysis of the Ninth Grade High School Math Textbook based on NCTM Content Standards

This study aims to investigate the state of NCTM content standards in the ninth mathematics textbook of the first year of high school, released in 2015. These standards included numbers and operations, algebra, geometry, measurement and data analysis, and probability. In this respect, the researcher used descriptive research and the content analysis method to analyze the degree of conformity of the book with the components of content standards. All of the ninth-grade math textbook topics are included in the statistical population. As a result, the study sample was chosen based on the whole population. The research instrument used in the analysis is a checklist. The outcomes of the study are based on descriptive statistical techniques. The NCTM standard checklist for the content analysis of ninth to twelfth-grade mathematics was used to determine the checklist. The findings revealed that in the field of numbers standard and operations of number perception component, in the field of standard algebra factor of using mathematical models to express and understand quantitative relations, concerning the standard geometry of the component analysis of properties and properties of multidimensional geometric shapes in the standard data analysis and probability, understanding and applying the basic concepts of the most likely adaptation and in the components of understanding the meaning of applying and examining the relationship with other elements of the standard of numbers and operations, in changing the content analysis of different algebra standard, in the field of geometry standard, analyzing the display systems and in the selection component of the standard, it had the least probability of adaptation. It was equally adhered to in both components when it came to the measuring standard.