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EVERY art and every inquiry, and similarly every action and pursuit, is thought to aim at some good; and for this reason the good has rightly been declared to be that at which all things aim. But a certain difference is found among ends; some are activities, others are products apart from the activities that produce them. Where there are ends apart from the actions, it is the nature of the products to be better than the activities. Now, as there are many actions, arts, and sciences, their ends also are many; the end of the medical art is health, that of shipbuilding a vessel, that of strategy victory, that of economics wealth. But where such arts fall under a single capacity -- as bridle-making and the other arts concerned with the equipment of horses fall under the art of riding, and this and every military action under strategy, in the same way other arts fall under yet others -- in all of these the ends of the master arts are to be preferred to all the subordinate ends; for it is for the sake of the former that the latter are pursued. It makes no difference whether the activities themselves are the ends of the actions, or something else apart from the activities, as in the case of the sciences just mentioned.

Engaging

stories, photos, videos, and slide shows from the natural world build observation skills, inspire scientific thinking, and create fertile ground for discussions and new questions!

If the new trend in textbooks is moving them to computer screens, the switch could have negative consequences as many suggest that people skim more, process more shallowly, and may retain less information when reading online, Daniel said.

he readers’ goals are different: Individuals reading an e-book for enjoyment aren’t required to pass a comprehension-based test afterward. While they found that learning is possible from both formats, learning from e-textbooks takes longer and requires more effort to reach the same level of understanding, even in a controlled lab environment. At home, students report taking even more time to read e-textbooks as well as higher rates of muti-tasking (e.g., Facebook, electronic chat, texting, email, etc.) than do their peers using printed textbooks.

In their preliminary findings, the scanning pattern produced when the student read a textbook showed consistent reading from line to line down the page. But the scanning pattern from reading on the screen was less intense.