A revised edition of the bestselling activities guide for math teachers Now updated with new math activities for computers and mobile devices--and now organized by the Common Core State Standards--this book includes more than 650 ready-to-use math starter activities that get kids quickly focused and working as soon as they enter the classroom. Ideally suited for any math curriculum, these high-interest problems spark involvement in the day's lesson, help students build skills, and allow teachers to handle daily management tasks without wasting valuable instructional time. * A newly updated edition of a bestselling title * Ideal for math teachers in grades six through twelve * Includes more than 650 ready-to-use starter problems