Answer: (1) Teaching activities are always determined by social ideology and influenced by the political morality of the ruling class.

(2) Scientific knowledge itself has important ideological and moral education value.

(3) Teachers are people with certain ideas, which have a direct impact on students' ideological and moral education.

(4) There are also educational factors in teaching methods and organizational forms, which affect students' way of thinking, learning methods and thinking behavior. Teaching is always education, which is an objective law.