Weekly gem: Adam Bellow of EduTecher, a site jam-packed with links of free resources for teachers, shares this thought: "Most educators hear 'data' and get a little dizzy at the thought of standardized tests, and school or student performance assessments. But there's a whole other side of data: the world of infographics. This is the art of taking complicated ideas built out of numbers and statistics and transforming them into something more manageable, visually appealing and -- dare I say -- cool. Visual.ly lets you explore mesmorizingly beautiful and well-constructed infographics. Later this year, the site promises you can build your own (it's not clear if they'll offer a teacher discount). For now, have fun whipping up a visual breakdown of your Twitter-iness. Or look at missions to Mars. Edward Tufte never had it so good.