This colorful set includes an activity guide and 25 self-checking, 3-piece puzzles designed to be used in two ways as 2-piece puzzles and as 3-piece puzzles as children progress. Two sets in one! The puzzles and activities are designed to help children name and read whole numbers 1 to 25 and count up to 25. Includes:25 3-piece puzzles (measures 9" x 3"), 2 page teacher's guide. Ages 4-5.