Teaching is a process of 

Teaching refers to the actions of someone who is trying to assist others to reach their fullest potential in all aspects of development. Teaching would result when the teacher indulges in any activity with the intention that pupils would learn something as a consequence of it.

Teaching as Facilitation of Teaching-Learning Process: The teacher’s role is only to guide or facilitate the act of learning of students. Teaching facilitates learning not directing learning.

• By way of facilitation, teachers are expected to perform several tasks at the pre-instructional, during-instructional, and post-instructional stages.
• Teachers have to gather in advance all the required resources such as materials, texts, worksheets, etc so that students can learn on their own without any interruption.
• Teachers also have to select appropriate content, activities, or issues in consultation with students looking into the relevance and interests of students. 
• The teacher is a stimulator and facilitator of student activities.
• He/she employs such techniques and methods as discussion, debate, role-play, cooperative learning, inquiry, games, and other devices and activities for actively involving students in the classroom.

NOTE: 

• Training is the act of transmitting knowledge and skills from one who knows to one who doesn’t know.
• Teaching is not a process of giving instructions. It facilitates learning by using constructive instructional methods.

Hence, we can conclude that Teaching is a process of Facilitating of teaching-learning.