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This workbook (along with others in the series) is truly unique and unusual. Through fun “logic” activities, they give kids glimpses of many areas of math that are mostly not touched upon in school: graph theory, topology, number theory, 2D and 3D geometry, algebra, logic – to name a few. And all of this in an age appropriate way! Read more about it and see an example in my post https://aofradkin.wordpress.com/2013/...