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18,600원  | 20110607  | 9781426965197

When students reach middle school, they must work on a daily basis with integers. If they haven't mastered them by the time they reach high school, they end up in trouble. Integers are the "verbs" of algebra-if you don't understand the verbs, you can't do much of anything. This workbook shares a decade of research and closes a crucial gap that prevents many students from understanding integers.