本文以兩次與臺灣清華大學歷史研究所榮譽教授張元的訪談，及其所提供的資料為據，報導其多年來持續推動歷史教學改進的努力與成果。全文分為五節，前言說明本文寫作的緣起與張教授的簡歷，第二至第四節則分別報導張教授在推動歷史教學改進方面所做的努力：析辨歷史與歷史知識的意義、倡導旨在培養學生思維能力的歷史教學、提示歷史教學改進的要領。本文在第五節的結語中，除了歸納張教授多年來推動歷史教學改進的成果，並且指出張教授期許歷史教師應當確認教學的改進永無止境，唯有點滴積累、不斷修整教學作法，方能帶動學生歷史思維能力的提升。

The article, based on two interviews and related literature, reports the continuous efforts and achievements of Prof. Yuan Chang, Emeritus Professor, Institute of History, National Tsing Hua University, as a historian who devotes himself to the advancement of history teaching. It is divided into five sections. The background of the article and a brief introduction of Prof. Chang are described in the first section. Prof. Chang’s unceasing efforts of the betterment of history teaching, i.e., clarification of the meanings of history and historical knowledge, the dissemination of the teaching for the progress of students’ history thinking, and the presentations of the critical practices of history teaching are explained in the second through the fourth section. In the last section, apart from synthesizing Prof. Chang’s contributions, his expectations that history teachers should believe that the advancement of historical teaching is an endless work, and they should make piecemeal and accumulated adjustment for better teaching to develop students’ history thinking are delineated.