The Third International Workshop on Augmented Reality in Education (AREdu 2020) took place on May 13. Teachers and graduate students of the Department of Environmental Chemistry and Chemical Education (Lilia Midak, Olga Kuzyshyn, Ivan Kravets, Khrystyna Buzhdygan) had the opportunity to participate in the seminar online. The participants of the seminar discussed the problems and prospects of using augmented reality in the educational process. Postgraduate student Khrystyna Buzhdygan presented the development of the department – a mobile application LiCo.SolarSystem for the study of astronomical concepts in primary school.