Some professors, like Dubson, endorse simple, straightforward devices that stick to multiple-choice questions. Others embrace fancier models or newer applications for smart phones and laptops that allow students to query the professor by text or eMail during the lecture or conduct discussion with classmates—without the cost of purchasing a clicker.

Those preferring simplicity say pared-down remotes reduce distractions in a multitasking world, while others say fighting the march to smart phones and digital tablets is a losing battle…

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