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"Sally Hurd Smith, a veteran teacher, held up her brand-new tablet computer and shook it as she said, "I don't want this thing to take over my classroom." It was late June, a month before the first day of school. In a sixth-grade classroom in Greensboro, N.C., a dozen middle-school social-studies teachers were getting their second of three days of training on tablets that had been presented to them as a transformative educational tool. Every student and teacher in 18 of Guilford County's 24 middle schools would receive one, 15,450 in all, to be used for class work, homework, educational games - just about everything, eventually. "

" Using Twitter sounds so simple. Type out no more than 140 characters - the maximum allowed in a single tweet - and hit send. That's all, right? Not quite. Twitter's interface may look simple, but it is not, and its complexity has turned off many people who tried the service. This is a problem because one of the big questions facing Twitter before it starts trading as a public company, perhaps as early as next month, is whether it can attract enough users to become a robust outlet for advertising dollars. Although Twitter brings in money from advertising, it does not yet sell enough ads to make a profit. "

"When Sonja Khan started college, she'd never thought of studying computer science. But when she heard from friends that the intro class was good, she decided to give it a try - and then ended up majoring in it. Four years later, she has just graduated with a computer science degree, is pursuing a master's degree and is headed to a summer internship at Facebook. "I didn't even know anything about the field before; I had never considered it," she said. "I signed up for it pretty much on a whim and really enjoyed it." Ms. Khan's story reads like a dream for universities and technology companies - where only about 15 percent of computer science graduates and technical workers are women. The industry has been under pressure to recruit more. The difficult question, though, is how to encourage more women on paths like Ms. Khan's"

"Nearly two decades ago, a landmark study found that by age 3, the children of wealthier professionals have heard words millions more times than those of less educated parents, giving them a distinct advantage in school and suggesting the need for increased investment in prekindergarten programs. Now a follow-up study has found a language gap as early as 18 months, heightening the policy debate. "

"In much the same way that Facebook swept through the dorm rooms of America's college students a decade ago, Yik Yak is now taking their smartphones by storm. Its enormous popularity on campuses has made it the most frequently downloaded anonymous social app in Apple's App Store, easily surpassing competitors like Whisper and Secret. At times, it has been one of the store's 10 most downloaded apps. Like Facebook or Twitter, Yik Yak is a social media network, only without user profiles. It does not sort messages according to friends or followers but by geographic location or, in many cases, by university. Only posts within a 1.5-mile radius appear, making Yik Yak well suited to college campuses. Think of it as a virtual community bulletin board - or maybe a virtual bathroom wall at the student union. It has become the go-to social feed for college students across the country to commiserate about finals, to find a party or to crack a joke about a rival school. Much of the chatter is harmless. Some of it is not."

"Tech Tips For Teachers: Free, Easy and Useful Creation Tools"

"Managing Reputations on Social Sites"

"The most important technology product no longer sits on your desk but rather fits in your hand. "