Sharf is a tool for understanding Arabic, of course it has many functions in reading and understanding Arabic. Sharf is called the mother of all knowledge, because sharf gives birth to sentence forms, while the sentences show various kinds of knowledge. Teaching materials are a very important component in the implementation of the learning process. With teaching materials, educators will be helped so that they feel easier in carrying out learning activities, as well as students will be more helped in their learning. Teaching materials are one of the most important factors in the effectiveness of learning. The purpose of this study is to develop Sharf teaching materials that are intended so that students can learn the science of sharf more easily in understanding it. This study uses a Research and Development methodology approach. word change patterns are a very important aspect in understanding language structure. So, word change is a process or state when a word that undergoes modification of its form with the aim of indicating differences in meaning or interpretation. Word changes can occur in several ways, for example through inflection (changing form to indicate nouns, verbs, or adjectives), derivation (using affixes when forming new words), and other morphological changes.