2a+3a=5a without apples: the algebra as object analogyTools Tennant, 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. Official URL: http://www.m-a.org.uk/jsp/index.jsp?lnk=610
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