This is the 9512th most frequent Russian word.
учебные
"Учебные" means "educational" or "related to studies."
Here, 'учебные' is used as an adjective describing 'материалы,' specifying that the materials are related to education or learning.
Учебные материалы лежат на столе.
The educational materials are on the table.
In this sentence, 'учебные' modifies 'поездки,' indicating that the trips are for educational purposes, enhancing the learning experience.
Школа организовала учебные поездки для своих учеников.
The school arranged educational trips for its students.
Here, 'учебные' describes 'книги,' signifying that the books serve the function of studying or are designed for academic use.