INFORMATIONAL books aka NONFICTION books. usually written in expository from. The writing conveys viable information about the past, presents, and future. What is the Purpose of Informational Books? Nonfiction writers report facts about the real world in biographies and informational books.Click to see full answer. Considering this, what is an informational text book?Its primary purpose is to inform the reader about the natural or social world. Some examples of types of informational text include cause-and-effect books, “all about…” books, question-and-answer books, and most reference texts. The quality of informational text can be judged in a variety of ways.Subsequently, question is, what are three types of informational texts? The various types of informational text are: literary nonfiction, which has shorter texts like personal essays; opinion pieces; speeches, literature essays and journalism; expository texts containing indexes and table of contents and navigational devices. Considering this, what are the 4 types of informational text? There are five types of text we are going to discuss: definition/ description, Time order/chronological or sequence, cause and effect, comparison and contrast, and problem-solution.What are the elements of informational text?Some common features in informational texts include headers, bold type, visual representations, and captions. All of these features are used to help organize the information on a specific topic.