The students choose a certain place they would like to visit. I have my fourth graders choose a state from a specific region I give them. You could use this with traveling the world, or you could do this within your own state. This is a very versatile activity. They have to plan out a three day trip, with activities and meal plans for four people. They also have to estimate the cost of what each item would cost, including lodging. Once they have this they have to create a power point about their trip. You can also add the extension of having them also create a brochure or have them write each day out in a paragraph.