Web augmented reality (WebAR) development tools aimed at improving the visual aspects of learning are far from being visual and available themselves. This causing problems of selecting and testing WebAR development tools for CS undergraduatesmastering inweb-design basics. The research is aimed at conducting comparative analysis of WebAR tools to select those appropriated for beginners.

Information is provided on the number of earthquakes in Kryvyi Rih and their parameters for the period 2007–2018. The types of seismic phenomena, the criteria for their identification are considered. The most probable natural and technogenic factors of the epicenters of local earthquakes are established by analyzing their location and sequence in time from the point of view of the tectonic features of the territory and the nature of the technogenic interference in its structure. The necessity of creating a local seismological network in Kryvyi Rih is substantiated. With a view to predict hazardous seismic phenomena, there is a need to continue hydrogeodynamic monitoring of ground water, to introduce seismic gravity monitoring and to conduct microseismic monitoring at mining enterprises. The results of systematic monitoring shall serve as the basis for seismic microzoning of the city. It is emphasized that popularization and dissemination of knowledge about the seismicity of mining regions among the population shall play an important role in the implementation of this task. The research materials can be used in the master’s degree programme within the framework of higher education system and in advanced training of specialists in the mining industry.

This is an introductory text to a collection of papers from the AREdu 2021: The 4th International Workshop on Augmented Reality in Education, which was held in Kryvyi Rih, Ukraine, on the May 11, 2021. It consists of short introduction, papers’ review and some observations about the event and its future.

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