6 Safety Apps Every Student Should Download [Mashable!] - A college-focused list, but most of the apps would be relevant for middle and high school students as well. See also Facebook and Google Help Launch Online Safety Platform For Teens.
Everything You Need to Know About iOS 6 in Under Three Minutes [Lifehacker] - In case you missed it.
Kindle Whispercast gives schools and teachers control over students' tablet browsing [Slate]
Periodic Table Wall Graphics from Yiying Lu. Plus FREE Periodic Table Design Downloads! [WALLS 360] - A free, printable interactive periodic table that uses QR Codes for each element. Your students could use one of any number of free QR Code reader apps to find more information.
Why Tablets Are Important for Educating Our Children [Wired:GeekDad]