Perfect for beginning and young readers, National Geographic Pre-readers include simple, expert-vetted text and large, engaging photos on every page. A vocabulary tree at the beginning of the book introduces kids to key words in concept groups, helping kids make connections between words. Plus, a wrap-up activity gives kids a chance to use what they've learned, while expanding their understanding of the world. From fuzzy ducklings to graceful birds, waddle your way into this adorable early reader, all about ducks! Perfect for beginning and young readers, National Geographic Pre-readers include simple, expert-vetted text and large, engaging photos on every page. A vocabulary tree at the beginning of the book introduces kids to key words in concept groups, helping kids make connections between words. Plus, a wrap-up activity gives kids a chance to use what they've learned, while expanding their understanding of the world.