Digital textbooks have various advantages in science learning for the era of digital transformation based on functions such as virtual labs, high-definition images, and interactive contents. However, the current science class is administering without a learning model suitable for the era of digital transformation. Therefore, it is necessary to suggest a science learning strategy using digital textbooks in preparation for the digital transformation era. In this study, we developed a science teaching and learning model for the digital transformation era using digital textbooks. As a result, it was possible to provide a learning model based on a problem-solving process using digital textbooks and a learning strategy using digital functions in science class. The model consists of three steps in the teaching and learning process : Advanturing, Projecting, and Prosuming (APP). In addition, the APP model uses digital textbooks that include teaching and learning strategies of thinking and social interaction in creative problem solving. Therefore, the development of the APP model with appropriate digital functions and learning strategies could be applied to develop and evaluate digital textbooks and learning process suitable for the digital transformation era.