A WEEK IN MATH: Dan Meyer, math blogger extraordinaire, writes a compelling article this week on why math teachers should download ClassKick. Here’s a sample: feedback tool ClassKick “organizes student work and puts it in front of teachers” in a way that makes “smart teacher feedback” quick yet effective. In other math news, WolframAlpha recently announced the launch of Mathematica Online: a version of Mathematica that operates completely in the cloud—and is accessible just through any browser.