Acknowledgments -- Introduction -- Fourteen Case Studies -- Case 1. Changing Sections:On the first days of class, different instructors in a multisection calculus course grapple with weak student knowledge of prerequisites -- Case 2 Emily's Test: Possible cheating in a proctored exam -- Case 3 Fundamental Problems: Explaining the fundamental theorem of calculus -- Case 4 Making the Grade: Grading Student work -- Case 5 Making Waves: Motivating Fourier series through physics -- Case 6 Order out of chaos: A precalculus class struggles with graphing calculators -- Case 7 Pairing Up: Managing group work -- Case 8 The quicksand of problem four: A recitation section covering average veolcity goes awry -- Case 9 Salad Days: A struggling Calculus Student -- Case 10 Seeking points: student protest his exam grade, having used prior knowledge about the derivative to solve the examintation question -- Case 11 Study habits: A TA seeks ways to get her class to work harder -- Case 12 Studying the exam: Constructing an effective, appropiate examination -- Case 13 There's Something about ted: Moving to a large state university as an instructor -- Case 14 What were they thinking?: Copinbg with poor exam results