The purpose of this study is to propose a ways of constructing text resources for reading education by posing a problem about the current way of providing texts for reading education. For this purpose, this study examined the reading ability required in the digital age. As a result, discussion was focused on affordances and authenticity. Based on this, three ways of providing text were proposed, which assumed an environment using digital textbooks. First, increasing affordances : Providing textual information as search terms, adding a toolbar to experience multimodal texts. Second, improving authenticity : Paper compositions similar to actual text, multitasking support method to increase the authenticity of the task and examples of materials for multitasking. Third, updating to the latest forms of digital texts. This study will contribute to the effective development and use of digital textbooks of Korean language education to prepare for literacy in digital era.