"Kids are LOVING these games during rotation time to reinforce standards." This 2nd Grade Operations Games Pack includes 27 differentiated games for practicing 2nd grade addition and subtraction standards! These games support the 2nd grade CCSS operations standards {2.OA.1, 2.OA.2, 2.OA.4, 2.NBT.5, 2.NBT.6, 2.NBT.7, 2.NBT.8}.