This activity is a review activity for Algebra I or 7th/8th grade mathematics class on solving equations.
Topics covered: Writing equations from words; Solving one-step, two-step, multi-step, absolute value equations; Evaluating absolute value expressions; Finding increased or decreased prices based on percentages
I place the problems all over the room, students are in partners and "travel the world" together. After each problem (in a different city), they are to check their answers with me - it is their "passport," and if they are right, then I stamp their paper and they move on to another city. The kids really enjoy it - it keeps them moving - and engaged at their own pace!