Grouping—an aid in learning multiplication and division facts
Autor: | DEANS, EDWINA |
---|---|
Zdroj: | The Arithmetic Teacher, 1961 Jan 01. 8(1), 27-31. |
Databáze: | JSTOR Journals |
Externí odkaz: |
Autor: | DEANS, EDWINA |
---|---|
Zdroj: | The Arithmetic Teacher, 1961 Jan 01. 8(1), 27-31. |
Databáze: | JSTOR Journals |
Externí odkaz: |