Logic Safari Book 3
Prufrock Press puts out super logic resources! I've had the pleasure of using five of their logic/critical thinking books for elementary children and would recommend them to anyone . . . My kids LOVE these. We typically take one day a week during math time as a logic day. Puzzlers like these are some of the resources I'll use and they literally beg me for logic days . . . Black and white illustrations make the pages attractive to my children, while thorough, but uncomplicated explanations and clues are attractive to me. --Cindy West, The Curriculum Choice - December 14, 2009