Since literacy is essential for learning, one of the main purposes of elementary school is to enhance students' literacy skills. In many countries, it's quite common to use an interactive whiteboard in class, and Taiwan is no exception. The purpose of this study was to determine the effectiveness of using an interactive whiteboard to teach picture books. A mixed-method approach was used in this study. Interactive whiteboards were used to teach picture books to four classes at an elementary school. A pre- and post-test were used to evaluate the increases in the vocabulary of the students. Furthermore, the four participating teachers were interviewed to determine their views on using an interactive whiteboard to teach picture books. The results indicate that using the interactive whiteboard in the lower grades increases the students' interest in reading at school and improves their level of literacy. Based on the results, some suggestions are provided for schools.