Operations and Algebraic Thinking (OA)
Solve problems involving the four operations, and identify and explain patterns in arithmetic.
Major Standard: Identify arithmetic patterns (including patterns in the addition table or multiplication table), and explain them using properties of operations. For example, observe that 4 times a number is always even and explain why 4 times a number can be decomposed into two equal addends.
Ability to apply knowledge of skip counting (1.OA C.5 and 2.NBT.B.2) and explain “why” the pattern works the way it does as it relates to the properties of operations.