A train leaves New York City (NYC) to go to Los Angeles (LA) at 100 mph. Three hours later, a train leaves LA to go to NYC at 200 MPH. Assume there's exactly 2000 miles between LA and NYC. When they meet, which train is closer to New York City? Check out the answer. Then, try other brain teasers compiled by NIEHS.
This famous folk song is believed to have been written in the last 19th century, as railroads expanded across the country, built “all the livelong day” in back‐ breaking work. Through the Library of Congress, you can access railroad maps from the period to help your students consider such questions as how the location of tracks and stations influenced land development and the growth of cities and towns in the United States.