On May 15, 2023, the Faculty of Physics and Mathematics and the Library of Ushynsky University held an event for the students of the 5th grade of the Communal Institution "Rishelievsky Scientific Lyceum" (class teacher - mathematics teacher Viktoriya Mykhailivna Kaplun) for the Day of Science. First, the custodian of the sector of valuable and rare literature, librarian Nataliya Lyubomirivna Honcharenko conducted an inspection tour of the library. The students visited the main book depository, viewed an exhibition of 19th-20th century textbooks, learned about the process of scanning modern books and old prints, listened to a short lecture on the history of Ushynsky University with a presentation of 19th-20th century photographs. Next, the students of the Faculty of Physics and Mathematics held a "Megamathematical quiz" with the children, during which they not only tested the students' knowledge of mathematics, but also conducted a short master class on solving some logical problems. At the end of the event, the children received small gifts.