box-17-folder-4-notes-ca-1929-1948-misc-4-sensitive-periods-liberty-geography-psychology-young-explorer-lecture-notes-liberty-in-the-schoolroom-math-environment-writing-reading-gr Post date July 23, 2022 Tags Edwin Mortimer Standing - Biographic sources, Edwin Mortimer Standing - Writings ← box-17-folder-5-notes-ca-1929-1948-montessori-is-the-discovery-of-the-real-child-nfehhuqc → box-17-folder-3-notes-ca-1929-1948-misc-3-civilization-multiplicationdiscoveries-grammar-fundamental-principles-of-montessori-teaching-anything-seasonal-materials-impossible