“Okay Lizzy, let’s plan our trip. Get the map out.” For half an hour, their 昀椀ngers traced every road on that map. They calculated how long it would take to get to Grandma’s new house. There were two ways to get there. It wasn’t a simple choice. “Well, Lizzy, it depends on what we want to do. We can take the highway, which will be fastest, but it’ll be really boring. Or we can take the country roads. They’ll be bumpy and dusty, but certainly will be interesting.” “Lizzy, it’s your choice. What sounds good?” 7