This inventory is a great tool to use. It can be used at the beginning of the year, throughout the school year as a check in to see where your students are, as review practice, or at the end of the year to see what areas you need to cover again. This inventory includes quick quizzes in the areas of place value, number sense, addition, and subtraction. These quizzes each also include an answer key. The problems in the quizzes are color coded to show the various grade levels they pertain to. (They