1919年陈鹤琴先生获哥伦比亚大学教育硕士学位后回国,任南京高等师范学校和东南大学教授,1920年起他主要以自己的儿子一鸣、女儿秀霞为研究对象,对儿童身心的发展作了连续808天的观察、实验和文字、摄影记录,累计笔记十余本。他根据这些连续观察和追踪实验的珍贵资料,以“科学的头脑、母亲的心肠”写成《家庭教育》,于1925年出 In 1919, Mr. Chen Heqin returned to China with a master’s degree in education from Columbia University. He served as a professor at Nanjing Normal Normal School and Southeast University. Since 1920, he mainly studied his son Yiming Ming and his daughter Xiu Xia, and made continuous development of children’s mind and body 808 days of observation, experiment and writing, photographic records, a total of more than ten notes. Based on these precious materials of continuous observation and follow-up experiments, he wrote “Family Education” with “Scientific Minds, Mother’s Hearts,” and in 1925