This is the 13097th most frequent Russian word.
материалу
The Russian word "материалу" is the dative singular form of "материал," meaning "material" (e.g., substance, content, or fabric).
Here, 'материалу' refers to the subject matter or educational material being discussed in the lesson.
Учитель дал интересное объяснение по материалу.
The teacher gave an interesting explanation about the material.
In this context, 'материалу' signifies the physical content of the material (e.g., text or written items).
Мы обратили внимание на ошибки в материалу.
We paid attention to the errors in the material.
Here, 'материалу' represents a type of physical substance or material used in construction or creation.