By studying history, we can find that the thought of "differentiating instruction" have spread in various teaching theories, the course theories and its fulfillment.

从历史的追溯中可以发现，“差异性教学”的思想散见于各种教学理论和课程理论及其实践中。

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These and other thought-provoking theories make this slim volume by a history professor at the University of Genoa more than just another collection of past culinary oddities.

ECONOMIST: Books-in-brief