Teachers are incorporating mobile technology and a digital sensibility into classroom lessons with assignments such as this one: to caption a historical photograph for teacher Nicholas Ferroni's high school history class in Union, N.J. Courtesy of Nicholas Ferroni hide caption

itoggle caption Courtesy of Nicholas Ferroni

Two youngsters play in a Minecraft tournament Aug. 9 in Ascot, England. Miles Willis/Getty Images for Ascot Racecourse hide caption

itoggle caption Miles Willis/Getty Images for Ascot Racecourse

Cyberstalking victims often don't know they're being tracked through their own phone because spyware apps like mSpy use misleading labels (labeled "android.sys.process" here) and don't take up much data. Aarti Shahani/NPR hide caption

itoggle caption Aarti Shahani/NPR

German driver Nick Heidfeld of Venturi Formula E Team. The all-electric cars can go from zero to 60 in under 3 seconds, and reach top speeds of over 150 mph. How Hwee Young/EPA/Landov hide caption

itoggle caption How Hwee Young/EPA/Landov

Apple CEO Tim Cook speaks in Cupertino, Calif., on Tuesday. The company unveiled a new mobile payment system called Apple Pay, which uses security built into the latest iPhones. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images

Slow-loading messages will appear on some of your favorite sites Wednesday as part of a protest for net neutrality. But the sites won't actually be loading slower — the banners will be displayed just to make a point. iStockphoto hide caption

itoggle caption iStockphoto