With such features as Word Banks and Word Sources that teach Latin and Greek roots, Usage Notes and Synonym Studies, an 18-page reference section including world maps, a periodic table, U.S. presidents, and more, the "Thorndike Barnhart Junior Dictionary" offers an incredibly comprehensive children's reference. Include are 68,000 entries (over 4,000 new to this edition), 34,000 illustrative examples, 900 notes, and 1,200 full-color photos and illustrations.