The Iditarod sled-dog race is run on a trail that was used to be a mail-supply route. In 1925, part of the trail became a lifesaving highway for the children who lived in Nome.
A serum (medicine) was needed to prevent or cure a disease and it had to be delivered to the children who suffered from a deadly disease. The serum was transported successfully by a string of mushers and their dogs.
A Lapbook is a hands-on method for students to visually learn about the subject material being taught. A Lapbook highlights the study.