After reading chapters 9 and 10 in the book, I incorporate this ongoing activity into the rest of the book. Students love working on this after all assigned reading is done for the day. Simple plan and student sheet where students plan a trip to somewhere in the United States. It incorporates finding gas prices, hotels, distances between points... Students choose a destination, are given an allowance and must plan the trip (stopping 3 times) within their budget. My students love looking for bargain hotels and deciding how far to drive each day.