social-conditions-and-the-development-of-the-child-san-francisco-panama-pacific-international-exposition-lecture-8-19-august-1915-t6awc96w Post date December 14, 2021 Tags Maria Montessori - Speeches, addresses, etc., Panama-Pacific International Exposition (1915, San Francisco, California) ← the-biological-chart-as-the-basis-for-the-childs-psychological-study-a-history-of-psychologys-educational-methods-san-francisco-panama-pacific-international-exposition-lecture-10-25-august-191 → sensorial-materials-and-the-childs-developmental-learning-san-francisco-panama-pacific-international-exposition-lecture-16-10-september-1915-tibas4ai