Kerri O’Donnell 
Natural Wonders of the World [PDF ebook] 
Converting Distance Measurements to Metric Units

Students will learn to convert distance measurements into metric units while taking a trip to some of the greatest natural wonders. As they read about the Great Barrier Reef, Monument Valley, the Grand Canyon, Mount Everest, and Victoria Falls, they will consider the geographical greatness of these locations and learn how to convert these naturally-occurring physical feats into units of metric measurement.