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Math Sponges: Enriching Ways to Soak Up Spare Moments
by Leigh Childs
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Amazon.com Product Description (ISBN 0866512489, Paperback)Math Sponges contains 52 activities that require little or no preparation and take from three to ten minutes to complete. Organized alphabetically, with a subject index. Includes hints, variations, and extensions. Grades 3-6
(retrieved from Amazon Thu, 12 Mar 2015 18:23:20 -0400)
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