Book excerpt: World Geography Puzzles: Countries of the World for fifth to twelfth grades provides students with a variety of fun and challenging puzzles designed to reinforce geography concepts. This world geography book for middle grades and above engages students in learning through crosswords, word searches, hidden messages, and coded messages. Mark Twain Media Publishing Company specializes in providing engaging supplemental books and decorative resources to complement middle- and upper-grade classrooms. Designed by leading educators, this product line covers a range of subjects including mathematics, sciences, language arts, social studies, history, government, fine arts, and character.