This lesson is about text features found in textbooks. It defines text features as parts of textbooks that help locate and learn information, such as the title page, table of contents, headings, graphics, main idea boxes, and reference pages. The document lists common text features and asks how many the reader can find in their book. It explains that text features help readers know what is important and locate information quickly. Finally, it provides a chart showing which text features to use for different purposes, such as understanding vocabulary, finding main ideas, or locating data.