“…The multi‐user collaborative activities can be implemented with AR app and marker‐based or geo‐location‐based information provided via app with specific activities, quizzes, inside the app objects manipulations and interactions. The efficiency of an AR learning app should include entertaining contents, interactivity media (for example, video, audio, external sources of information), attractive design for primary grade, simulations, explanations of the STEM subjects, games (El Sayed et al, 2010; Lytridis et al, 2018; Su, 2019).…”