Topic は video

This is my explanation of Topic　「は」 a couple years ago. If I want to make another video, I will make it differently because how I teach students this topic is changing because there are many different students' characteristics, I understand this topic better , or I understand more effective way of teaching this subject.
I want you to write your understanding of this topicは in your own way of understanding, which I believe to lead to your deeper understanding of this subject.