There are also research topics and issues regarding instructional design and implementation waiting to be explored. As mentioned
previously, a majority of AR systems were designed for teaching science and mathematics, so future research requires the development of
substantial educational content on AR for other learning subjects. More educational studies with solid research design and rigorous analysis
are needed to examine the learning effects of AR. In addition, the potential of AR could be further expanded by designing and implementing
it for different educational purposes (e.g., assessments and tutoring) with diverse populations such as students with special needs and lifelong
learners. Moreover, because of the gap between the conventional teaching methods in classrooms and the exploratory nature of
learning engendered by AR systems, researchers need to explore the possibilities and solutions of integrating AR into regular school
curricula. One solution may be providing substantial support for teachers to tailor AR technologies, to create customized learning activities,
and to monitor students’ learning progress in AR.