This is the 17329th most frequent Turkish word.
öğreteceklerini
"Things that (he/she/they) will teach."
In this sentence, 'öğreteceklerini' is a future tense verb conjugated to imply what the subject (teachers) will do, specifically teaching rules to students.
Öğretmenler, öğrencilere matematik kurallarını öğreteceklerini söylediler.
The teachers said that they would teach mathematics rules to the students.
Here, 'öğreteceklerini' refers to their future intention of teaching new skills, linked with a commitment to the participants.
Eğitim programında, katılımcılara yeni beceriler öğreteceklerini taahhüt ettiler.
In the training program, they committed to teaching new skills to the participants.
In this context, 'öğreteceklerini' defines the future teaching action, specifying the transfer of knowledge from chefs to young cooks.