1

Picturing Fractions

Year:
1947
Language:
english
File:
PDF, 323 KB
english, 1947
3

To Tell—or Not to Tell

Year:
1958
Language:
english
File:
PDF, 459 KB
english, 1958
4

A One-Handed Clock

Year:
1960
Language:
english
File:
PDF, 225 KB
english, 1960
5

Parental Homework in Arithmetic

Year:
1936
Language:
english
File:
PDF, 536 KB
english, 1936