It's Only Logical

November 1, 2015

Gr 6-9-Can you solve the pouring problem? How are you at brain chains? This unusual series challenges perception and thwarts assumptions with optical illusions and seemingly simple activities. Memory games, pencil puzzles, and magic tricks allow readers to exercise numeracy and logic skills in fun and fascinating ways. Answer pages offer solving tips and/or solutions when the problems grow too taxing. While all of the activities work well, the author seems more comfortable with explaining math concepts-devoting a whole page to a good explanation of probability-than science, explaining why some optical illusions work but not others. Scrupulously accurate graphic illustrations (with some photos) are key to the success of these four sharp little books. VERDICT Shelve under "Spock"-there are sure to be takers for this set.

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