Math Small 147×320 Medium 294×640 Large 470×1024 Download Tiff Original 1101×2400 | (391.0 KB) Description A girl doing math problems on the chalkboard. Keywords adding, chalkboard, classroom, Division, girl working, math problems, school, student, subtracting, writing Galleries Individual Girls, School Students Source: Ellsworth D. Foster ed. The American Educator (vol. 1) (Chicago, IL: Ralph Durham Company, 1921)
