Factors

Justification

Pleasure

1) They are an innovative technology.

2) They have technological and pedagogical affordances.

Usefulness

1) Are easy to use (immediate and easy access to information, relaxing and time-saving study).

2) They provide opportunities for a better understanding of knowledge, especially when combined with augmented textbooks (access to a larger, more modern, and remote piece of information, enrichment of textbooks with augmented subjects, attractiveness and motivation for learning, visualization of knowledge and experientiality).

3) They can solve practical problems related to the use of printed textbooks (unhindered access to textbooks and learning and ecological reasons).

Ease of use

1) ARSG are easy to use and learn.

2) Their applications are easy to use and learn.

Relative advantage

1) They have unique technological features (e.g., hands-free access, first-person view)

2) They have pedagogical advantages (e.g., greater concentration, enjoyment, pleasure, and sense of presence)