Table 3 Descriptive information of the NUEPS

Function 1: Supporting teaching Activities (STA)

When teachers are using e-textbooks in teaching, they need functions to match the implementation of group learning, to share group learning outputs, notes and bookmarks; functions to show a fully classified booklist and automatically indicate teaching progress and enable access to teaching manuals and updated versions of the contents at any time, and to support the exchange and sharing of teaching materials; and functions for teachers to provide in-class quizzes, results of formative assessments, and to provide digitalized supplementary teaching materials to students at any time, and functions that would match with the learning diagnostic systems.

Function 2: Supporting features and functions of Reading and Presenting (SRP)

If teachers use e-textbooks in classroom teaching, then they need functions to support page turning, show the contents page, bookmarks, hypertext links, and the ability to change the size, font and color of a character style and hand input to facilitate reading and operations. In addition, they need network access, and broadcast in wireless networks to track students’ reading page, provide abundant content to teachers, display on various devices, change contents to adapt to the teaching contents consistent with learning needs, and support compatible format content so that teachers can integrate their teaching materials.

Function 3: Learning Activities and Parent Interaction (LAPI)

If teachers use e-textbooks in classroom teaching, then they need functions to take notes, use the highlight feature on books, enable students to batch upload electronic assignments, inform parents of the use of the e-textbook in class, provide a “Parent Management” interface and accounts managed and used by the parents that support parental reading and signing in the contact books.