Stukalenko Н., Tarasenko Ю., and Kasimova С. “The Main Directions of the Formation of Knowledge about the Environment in Children of Preschool and Primary School Age”. Рroblems of Engineering and Professional Education, vol. 7, no. 7, Jan. 2023, p. 46, doi:10.32523/2220-685X-2011-7-7-46.