Media type: E-Article Title: The stability of children's mathematical behavior: When is a bug really a bug? Contributor: Hennessy, Sara Published: Elsevier BV, 1994 Published in: Learning and Instruction, 3 (1994) 4, Seite 315-338 Language: English DOI: 10.1016/0959-4752(93)90022-r ISSN: 0959-4752 Keywords: Developmental and Educational Psychology ; Education Origination: Footnote: