Rothco Waterproof Backpack Cover 2% Metal Pins (Steel) A unique concept using daily RO54215 29370 A unique concept using daily reading lessons to teach American historyEasy to read stories that tell how America prospered during the Industrial Revolution and the Roaring TwentiesFourteen important historical topics are presented in eight page study unitsThe format of the study units is flexible and user friendly – perfect for differentiated instruction Each strip has a photographic image and is double sided with a word frame on one side and the word printed on the other The packable carrying pouch measures 9 inches x 7 inches Rothco’s Waterproof Backpack Covers provide a powerful and compact way to keep your backpack dry in the great outdoors without taking too much space in your pack