Number Talks * A five- to fifteen-minute classroom conversation around purposefully crafted problems that are solved mentally. * The best part of a teacher's day. Number Talks: Whole Number Computation is a dynamic multimedia resource created in response to the requests of teachers--those who want to implement number talks but are unsure of how to begin and those with experience who want more guidance in crafting purposeful problems. It supports teachers in understanding: * what a classroom number talk is * how to follow students' thinking and pose the right questions to build understanding * how to prepare for and design purposeful number talks * how to develop grade-level-specific strategies for the operations of addition, subtraction, multiplication, and division. A Framework for Collaborative Learning While Number Talks: Whole Number Computation may be used as an independent resource, it is also structured to provide a framework for collaborative learning groups or to provide