expression, ichidan verb
teach by example; teach through one's actions
Idiomatic expression meaning to instruct or guide others not through words but through one's own behavior and attitude. The literal image is of teaching with one's back, implying that the learner watches and follows from behind.
彼は言葉ではなく、背中で教えるタイプの上司だ。
He's the type of boss who teaches by example, not by words.
親は子
It's important for parents to teach their children through their own actions.