BIPA learners are foreign language speakers who are learning Bahasa Indonesia coming from various language backgrounds. Bahasa Indonesia is a foreign language in BIPA teaching. A foreign language is learnt based on a specific purpose. This is a qualitative research using content analysis approach to study the feasibility of Indonesian textbooks of basic reading material for foreign speakers. The study involved a set sample of teaching materials developed by BIPA instructors to improve the learning electability of Indonesian language learners. Good teaching materials contain various type of materials; ranging from simple basic materials to complex materials that are expected to develop world views and perceptions of the social background of native speaker communities in second learning and foreign languages. The materials developed by BIPA instructors were already inviting or influencing the reader, namely BIPA learners, to easily understand the contents of the materials and do something according to the wishes of the author. Some of the weaknesses of BIPA teaching materials, one of which was the existence of an effective sentence that must be accepted in understanding the text. A good learning material that contains elements of sentence formation must have a logical relationship so that it is easily understood by the readers. Conjunctions in sentences can be used as a means of connecting sentence elements with other elements or parts of sentences with other parts of sentences so it is not located at the beginning of a sentence. One of the effective sentence dysfunction is if the conjunction is placed at the beginning of the sentence, it will be ineffective. The dot before the conjunction in the data should be removed.