Are Your Lessons Suffering from "Rigor" Mortis? Don't Let Cognitive Complexity Scare You Stiff

Are the tasks in your lessons rigorous enough? Since the adoption of the Common Core mathematics standards certain phrases, such as rigor, cognitive complexity, and task analysis pop up repeatedly in conversations, presentations, math literature, and so on. What do these mean and how do we ensure our lessons reflect this shift?

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Building Mathematical Knowledge for Teaching