Eureka Math, A Story of Units: Grade 1, Module 2: Introduction to Place Value Through Addition and Subtraction Within 20

Common Core Mathematics is the most comprehensive Common Core State Standards-based mathematics curriculum available today. The modules are sequenced and paced to support the teaching of mathematics as an unfolding story that follows the logic of mathematics itself. They embody the instructional shifts and the standards for mathematical practice that are fundamental to the CCSS. Each module contains a sequence of lessons that combine conceptual understanding, fluency, and application to meet the demands of each topic in the module. Formative assessments are included to support data-driven instruction. The modules are written by teams of master teachers and mathematicians. With Common Core Mathematics, first graders learn about: developing understanding of addition, subtraction, and strategies for addition and subtraction within 20; developing understanding of whole number relationships and place value, including grouping in tens and ones; developing understanding of linear measurement and measuring lengths as iterating length units; and reasoning about attributes of, and composing and decomposing geometric shapes. Common Core Learning Standards Addressed in Grade 1, Module 2: 1.OA.1 , 1.OA.2, 1.OA.3, 1.OA.4, 1.OA.6, 1.NBT.2. SEQUENCE OF GRADE 1 MODULES: Module 1: Sums and Differences to 10; Module 2: Introduction to Place Value Through Addition and Subtraction Within 20; Module 3: Ordering and Comparing Length Measurements as Numbers; Module 4: Place Value, Comparison, Addition and Subtraction to 40; Module 5: Identifying, Composing, and Partitioning Shapes; Module 6: Place Value, Comparison, Addition and Subtraction to 100. Common Core is a non-profit organization formed in 2007 to advocate for a content-rich liberal arts education in America's K-12 schools. To improve education in America, Common Core creates curriculum materials and also promotes programs, policies, and initiatives at the local, state, and federal levels that provide students with challenging, rigorous instruction in the full range of liberal arts and sciences. Common Core is not affiliated with the Common Core State Standards Initiative.