Concepts of a subject gives us the background of main streams of a subject we are going to learn and study .
Concepts of a subject give us the background of the main ideas we are going to learn and study . Concepts of a subject give us the background and the main topics that we are going to learn and study . The concept of a subject gives us the background of the main streams of a subject we are going to learn and study . Presenting the concepts of a subject gives us background of the main areas of the subject we are going to learn and study .