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by AA.VV., R.M. Martín · Editorial Edarca · tapa blanda · ISBN 9788486545291
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Iniciación a la suma es un libro de texto diseñado para estudiantes de primaria. Publicado por Nadal-Arcada S.L., este cuaderno de cálculo es el número 1 de la serie C.MATEMATICAS PRIMARIA y ofrece una introducción básica a la suma. El libro está escrito en español y tiene 16 páginas.

Richard M. Lerner is professor of Human Development at Tufts University, occupying the Bergstrom Chair in Applied Developmental Science. Also at Tufts, he directs the Institute for Applied Research in Youth Development. He did his undergraduate work at Hunter College, graduating in 1966.