Ann Matzke 
Plus 1, Minus 1 [PDF ebook] 

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This math concept book engages young readers through simple text and photos as they learn how groups change when you add 1 or take away 1.

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Format PDF ● Pages 24 ● ISBN 9781615358021 ● Editor Britannica Digital Learning ● Publisher Britannica Digital Learning ● Published 2013 ● Downloadable 6 times ● Currency EUR ● ID 5750947 ● Copy protection Adobe DRM
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