From the CORE KNOWLEDGE FOUNDATION, which brought you the popular “What Your ___ Grader Needs to Know” series. WORLD RIVERS reinforces map skills and geographical concepts as young readers explore important rivers around the world and consider questions such What are the benefits and dangers of rivers? Why were ancient civilizations and modern cities established near rivers? Why are rivers are often associated with major historical events? Paperback. 58 pages. ** Part of the CORE KNOWLEDGE HISTORY AND GEOGRAPHY (CKHG) series in world and American history and geography, integrating topics in civics and the arts. CKHG books offer engagingly written text with many color illustrations, maps, vocabulary sidebars, and a glossary. Related materials (Teacher Guides and Timeline Cards) are also published by the Core Knowledge Foundation. In general, CKHG books are appropriate for young readers from the upper elementary grades through middle school.