Caldecott Medal winner Paul O. Zelinsky's first moving-parts book since the best-selling "Wheels on the Bus" is a beauty. To the verses of "This Old Man," an ingenious visual narrative follows a young boy as he ventures outside. Along the way, children can push tabs, turn wheels, or lift flaps to see ten different old men pop out of hiding to play Knick-Knack. Children (and critics) agree that "Knick-Knack Paddywhack " takes the interactive book to a new level of imagination. a?Smithsonian magazine Notable Book for Children 2002 a?Parenting magazine Book of the Year a?Newsweek magazine Top Pick for Kids a?New York Times Best Illustrated Book for 2002