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|a Sistema de Bibliotecas de la Universidad Nacional de Costa Rica
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|a H 370
|b J86j
|2 21
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|a An investigation of fraction models in early elementary grades
|h artículo de revista
|b : a mixed-methods approach.
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|a MODELOS MATEMATICOS
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|a ESTUDIOS DE CASOS
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|a ENSEÑANZA DE LAS MATEMATICAS
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|a EVALUACION
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|a PRIMERA INFANCIA
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|a Wilkerson, Trena L.
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|a Journal of research in childhood education. --
|g Vol.29, no.1 (Jan.-mar. 2015), p.[1]-25
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|a Biblioteca Joaquín García Monge. Hemeroteca
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|u http://www.tandfonline.com.una.idm.oclc.org/doi/pdf/10.1080/02568543.2014.945020
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