Book excerpt: The Grand Canyon is located in Arizona in the United States of America. It is a huge group of canyons that have been cut into the landscape by the Colorado River. It is also considered to be one of the greatest natural wonders of the world. Find out the answers to these questions and more: How does the Grand Canyon tell us the history of life on Earth? How was the Grand Canyon formed? How deep was the Grand Canyon before the Colorado River began running? The Grand Canyon should have been twice as deep as it is. Why isn’t it? What is the biggest predator in the Grand Canyon? Find out more about the Grand Canyon and amaze your family and friends with these fun facts. All measurements in American and metric. The Educational Version has activities that meet Common Core Curriculum Standards. LearningIsland.com believes in the value of children practicing reading for 15 minutes every day. Our 15-Minute Books give children lots of fun, exciting choices to read, from classic stories, to mysteries, to books of knowledge. Many books are appropriate for hi-lo readers. Open the world of reading to a child by having them read for 15 minutes a day.