Are these sentences correct:
1-I talked to him to make him understand that he had made a mistake.
2-I kicked him to make him fall.
3-They hit me on the head to make me fall unconscious.
They are all correct except your question, which requires a question mark.
Are these sentences correct?
#3 can be simply "... to make me unconscious" or more commonly "... to knock me out".
not a teacher