the-manipulative-materials-in-relation-to-the-childs-psychic-development-san-francisco-panama-pacific-international-exposition-lecture-11-26-august-1915-6eant98q Post date May 26, 2023 Tags Maria Montessori - Speeches, addresses, etc., Maria Montessori - Writings, Panama-Pacific International Exposition (1915, San Francisco, California) ← the-organization-of-the-work-materials-and-the-spontaneous-production-of-the-childs-mind-san-diego-lecture-1-14-july-1915-qksdumq6 → the-imagination-san-diego-lesson-of-19-july-1915-nsjqwmtk