Appendix I - Implementing Common Core Standards
2.OA Represent and solve problems involving addition and subtraction. Second grade students will be given numerous experiences throughout this curriculum unit to apply the practice standards while they are meeting this common core standard. The standard includes students understanding the different types of problem situations and how to solve them, operational fluency within the number 20, recognizing numbers as even or odd and defending reasoning for identification, and using arrays to model repeated addition.
2.NBT Understand place value. Mathematically proficient second graders need to be able to decompose numbers into hundreds, tens and ones, understand the value of each digit, know how to read, write, and represent numbers in multiple ways, fluently count and skip count by 5s, 10s, and 100s, and compare numbers using symbols. Then they need to apply their understanding to the operations of addition and subtraction.
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