This is a second grade math bundle, that contains all 4 standards within the Operations and Algebraic Thinking (OA) 2nd grade Common Core domain. Within this domain, there are full lesson plan units that cover addition and subtraction word problems, addition and subtraction strategies, odd and even, arrays, and more. Every single unit within this bundle comes with lesson plans, differentiated math group activities, math writing activities, interactive notebook activities, worksheets, assessments