Read the following passage from "Transportation Changes." (Center for Urban Education at DePaul University:http://teacher.depaul.edu/), and find the main idea: "The history of transportation is very long and full of changes and inventions. It starts with walking, which is not any invention; it just takes energy. People used to walk to get to other places. If you wanted to get somewhere quickly, the only way to do that was run. Actually, the first invention for transporotation was probably the shoe. Centures ago there were no shoes, people walked barefoot."

Read the following passage and find a details that supports the main idea from paragraph one, "The people invented ways to transport themselves and materials from one place to another. In some cultures, people invented sledges, which are a kind of board that you drag along with ground. You can tie things on the sledge to help carry them, but it's a challenging invention since if you hit a rock with the sledge as you pull it, the contents can slip off. In other cultures, people invented the wheel, which they used to make it easier to move things--and people. That was the beginning of many inventions in transportation."

What word gets repeated in this third paragraph that alerts the reader to what the detail that supports the main idea that the history of transportation is long and full of changes and inventions is? "Once people had wheels they could invent other ways to travel. They could put the wheel on a board and make it a wagon, and then they cold hitch that wagon to an ox or a horse and ride as well as carry materials. That wheel lead to what we have today: trucks, automobiels, and even boats and planes. There were steamboats that used giant wheels that turned with blades, pushing the water and pushing the boat forward."

Read paragraph four. What words get repeated that let you know that wheels are part of modes of transportation that fly is a detail that supports the main idea that the history of transportation is very long and full of changes and inventions?

Read the following paragraph. Which quote best summarizes the main idea and details that were found within this article? "Today there are many ways and modes in which people can travel: from boat, to airplanes, to automobiles, and yes, people can still travel by foot. The history of transportation has been very long and full of changes, and one can assume, those changes haven't stopped with space shuttles. One can predict that the history of transportation will continue far into the future with newer, better, more innovative modes of travel."