Can knowing about things of the past help predict the types of things seen in the future? Advanced learners consider the idea that things extend. In other words, concrete things like bridges and intangible things like ideas extend from one time to another. They research objects from the past that are seen today, yet have changed because of how they have been extended or altered by present people. Then, they apply that idea as they create a classroom of the future where today's objects are things of the past. A very cool way to get those creative brains bubbling.