Educator and education activist Gardner began her professional life as high school teacher of history and drew from personal experiences to make her lessons appealing. As an history teacher, she mixed archeology, art, architecture and travel to her lessons to make them more alive and interesting: Her pupils found her teaching so effective that they cited her words instead of those of textbooks during examinations. Early in her career, she taught at the
Marlborough Preparatory School in Los Angeles and was a mathematics teacher at the
Salinas High School. From 1909 to 1915, Jordan was the head of the History Department at the Los Angeles Polytechnic High School, She was one of the school's most prominent teachers and was also in charge of the visitors' day at the school. As early as 1902, she was also interested in shaping the education system within the state of California. As a young school teacher at Salinas High School in 1902, she presented a paper, "The History Note Book", at a statewide meeting of the
California Teachers Association condemning the use of the controversial "note-book system" in high schools as it pertained as an entrance requirement to Stanford University. Jordan claimed the notebook added interest to textbook work, but it was sometimes overestimated as a requirement for entrance to universities. In the 1910s, she was a member of the executive committee of the High School Teachers' Association and hosted its meetings at her own residence. In 1914, she was elected president of the
Southern California Social Science Association. After she retired, she remained involved with the
American Historical Association, like when, in 1917, she opened the College Teachers' session with the essay: "The relation between high-school history and freshman history."
Other activism In November 1913, she undertook a one-month trip in
Egypt, following the Nile, with
Benjamin Ide Wheeler, president of the University of California, and his wife. She then continued alone to India, and then, with another teacher at Poly, Mary Putnam, they visited
Montenegro, the then
Federated Malay States, and
Kuala Lumpur (where no American woman had been before them) and returned to the United States in February 1914. Once home, she gave a highly appreciated talk on the meaning of the flag to an American abroad during the George Washington's birthday celebrations. In November 1914, she was among the "prominent and active" women who hosted
Lou Henry Hoover while she campaigned for work relief toward the Belgian population at the California Club; Jordan said of Hoover: "She is the most capable woman alive." She was the chairman of the Department of Legislation Oakland Forum and a member of the Oakland Forum of the
League of Women Voters. To attend suffrage meetings that were held regularly in Berkeley, she had to travel approximately 370 miles in each direction by
steam-powered railroad from her home in Los Angeles. She was the president of the Town and Gown Club, In 1907, Jordan became involved in environmental preservation as one of the earliest members of the
Sierra Club and by promoting natural walks to her students. Gardner was also a member of the
Berkeley City Club, Oakland Club, Friday Morning Club, College Woman's Club of Los Angeles, on the board of directors of the Stanford Club of the Eastbay, and president of the Cornell Women's Club of Northern California and of the Stanford Woman's Club. In 1920, she was among the supporters of
Herbert Hoover as a member of the Berkeley Hoover Republican Club. In 1928, she was included in the book
Women of the West; a series of biographical sketches of living eminent women in the eleven western states of the United States of America, showcasing the few hundreds women that in the 1920s were prominent in frontier lands. In 1940, she spoke in front of the Lake Arrowhead Women's Club on her traveling experience on Balkan countries, the then Yugoslavia, Hungary and Romania. This talk covered tourist topics and social issues. Her 1961 unpublished manuscript, "The days of Edith Jordan Gardner", is preserved at the Stanford University Archives and is used are reference material by other authors, like Harriet Kofalk for "No woman tenderfoot:
Florence Merriam Bailey, pioneer naturalist". Being one of the last surviving persons who were present at Stanford University inauguration in 1891, in 1962 she was included in the essay "Stanford Mosaic", edited by
Edith R. Mirrielees, collecting memoirs of people attending Stanford. ==Personal life==