Students will be practicing adding two-digit and one-digit numbers (with and without regrouping) and adding and subtracting groups of 10. Students will work in small groups to solve each question. Upon getting a correct answer, they will receive a clue. As they solve questions and earn clues, they will try to figure out what's in the mystery box. At the end, you can have students guess what's in the box and then show them. This example has clues for Candy Canes, but you can change the clues to match anything you'd like to! There are teacher directions included.