How to embody student-centered in English teaching

This question is too broad and profound.

My understanding is that teachers should play a guiding role in the teaching process. The teacher is more like a magician, showing only the tip of the iceberg and letting the students discover the secret. For example, in grammar teaching, students are allowed to observe and summarize grammar rules by themselves. In educational psychology, this method is called discovery method.

For example, when talking about this and that, I made such an attempt and produced two sentences:

This book is mine. That book is mine.

Match two pictures, let the students observe which word is different between these two sentences, and analyze why with pictures.

The fact is that students will soon find out and be impressed.

What can you do in traditional teaching? The teacher shows the sentence and tells the students directly that this is an demonstrative pronoun followed by an object closer to the speaker, which is the opposite.

If you are interested, you can check the content of "constructivism".

A little humble opinion, I hope it will help you