✦ LIBER ✦
Fourth graders develop their own subtraction algorithm
✍ Scribed by IDA MAE SILVEY
- Book ID
- 125090918
- Publisher
- National Council of Teachers of Mathematics
- Year
- 1970
- Weight
- 425 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0004-136X
- DOI
- 10.2307/41186178
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