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- Interpretations:
- Geary 103?
- Move technical stuff down the article
- Discuss translations
- Properties: fix section on units
- Performing addition:
- Geary 7?
- Describe other children's strategies; Baroody 81, Fosnot and Dolk 98
- Definitions and proofs:
- Describe axiomatic method as alternative
- Expand on rationals
- Find remaining dates of first publication
- Generalizations:
- Fix addition of sets
- Mention more examples from cut-the-knot.org
- Image?
- Related operations: find missing references
- References: Purge obsolete refs
- Images:
- Write descriptions
- Move to Wikisource
