Activity and Sign: Grounding Mathematics Education
by Michael H.G. Hoffmann, Johannes Lenhard, Falk Seeger
ISBN 13: 9780387242699
Format: Hardcover (392 pages) Publisher: Springer Published: 13 Apr 2005
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ISBN 13: 9781441937117
Format: Paperback (400 pages) Publisher: Springer Published: 29 Oct 2010