Book excerpt: Author Thomas OOCOBrien uses 20 inquiry-oriented discrepant eventsOCohands-on explorations or demonstrations in which the outcomes are not what students expectOCoto challenge studentsOCO preconceived ideas and urge them to critically examine the empirical evidence, draw logical inferences, and skeptically review their initial explanations with their peers. ItOCOs the perfect dual-purpose activity book for science teachers who aim to motivate their students while expanding their own scientific understanding."