Tune in to highlights and commentary from the 6/11/13 #Edchat on the challenges of differentiating instruction. Follow:@blairteach, @tomwhitby @MrStaubSTEM @bamradionetworkJustin Staub is a Social Studies teacher and building technology leader at the Downingtown STEM Academy, an International Baccalaureate world school with a 1:1 Macbook Program. Twitter @MrStaubSTEM / blog drstaub.wordpress.com. Nancy Blair is a school improvement consultant who frequently worked with the High Schools That Work. Tom Whitby is contributing Editor at SmartBrief, founder of #Edchat,Twitter-Using Educators, and NYSCATE Network.