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Teaching materials are currently very dynamic in its development. The development of teaching materials is adjusted to the curriculum and student needs. Sometimes the basic things that are rarely considered in the development of teaching materials based on student needs, namely the text used as student reading material in making it easier for students to understand the subject. It finds it difficult for students in digesting the information or messages that they want to treat through the text, the technique is too long, errors in sentence structure, idea development, and the spelling used. This study aims to describe the thematic development patterns with language tools in the text of Mathematics and Natural Sciences teaching materials for Class VII Schools. This research method uses a descriptive analysis approach from the text contained in two teaching materials based on the 2013 Curriculum. This thematic progression model uses the Danes 1974 and Eggins 2004 models chosen as a theoretical analytical framework. The results of this study illustrates the pattern of progression themes and linguistic features in each field of teaching material analyzed. This will make it easier for students and teachers to understand the reading text contained in teaching materials. If the text of the teaching material has a thematic progression pattern and the language features are not good, this research can be an alternative evaluation in the development of teaching materials, especially in the selection of texts on teaching materials that will be developed by teachers or the government.