This product is for 2nd grade missing numbers. It includes addition and subtraction missing numbers within 100. It correlates with Math second grade Common Core standard 2.OA.A.1. It has multiple worksheets and a video for teacher, students, and parents. It also has a study guide and test for the missing numbers unit. There is one page that includes instructions for the teacher on the missing numbers. I teach missing numbers through fact families, so this does correlate with fact families as well.