2a+3a=5a without apples: the algebra as object analogyTennant, G. (2009) 2a+3a=5a without apples: the algebra as object analogy. Mathematics in School, 38 (1). pp. 4-6. ISSN 0305-7259 Full text not archived in this repository. It is advisable to refer to the publisher's version if you intend to cite from this work. See Guidance on citing. Official URL: http://www.m-a.org.uk/jsp/index.jsp?lnk=610
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