MEYER VS. KHAN: Stanford math whiz Dan Meyer offers here a detailed analysis of Khan Academy’s alignment with Common Core, based on working through the 8th grade math curriculum. Three days and 402 exercises later, Meyer concludes that Khan students are primarily doing two kinds of work (analysis and calculating), and expressing it as multiple-choice responses and numbers--which falls short of the demands of Common Core. Equally worth reading: the follow-up commentary (from many teachers) about where they see Khan fitting in (or not) to their instruction. How about you?