This is not math.
Just simple English.
OPEN THE SAFE 🙂 Tell me how it can be done.
Children all over the world love mystery stories and puzzles. This kind of easy but tricky puzzles always get students excited and talkative. By making the assignment a team project, one encourages students to learn from each other and be more engaged because of the competitive aspect of. Each team would to win the contest.
Many students can find the answer quickly but the challenge is to explain it in full English sentences whether verbally or in writing. In a classroom, the teacher must of course require students to make at least one sentence that matches the grammar point being studied that day.