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Progress in Mathematics2014 Common Core Enriched Edition Student Workbook Grade 1 Each lesson in Progress in Mathematics has a corresponding page of practice in these workbooks to reinforce lesson objectives and the relevant Common Core State Standards. Each includes: • Coherently sequenced lessons with step-by-step instruction to reinforce concepts and skills. • Practice pages that offer exercises for students to apply their knowledge and conceptual understanding of key math concepts. • A Common Core section with additional lessons and practice that focuses on key Common Core State Standards. • Three Performance Tasks that measure a cluster of Common Core State Standards and allow students to demonstrate their understanding of the content standards and show evidence of the Standards for Mathematical Practice."