(4) I Wonder Why Pyramids Were Built
I Wonder Why Pyramids Were Built is the perfect introduction to ancient Egypt, featuring pharaohs, amazing mummies, hieroglyphs and much more.
(5) I Wonder Why the Sea is Salty
Designed to amuse and intrigue the young reader, this book combines cartoons with facts and simple analogies to provide an introduction to the mysteries of the sea asking questions such as: which fish has headlights?; what makes waves roll?; and how deep do submarines dive?
(6) I Wonder Why The Sun Rises
Designed to amuse and intrigue the young reader, this book introduces the topic of time and seasons, including why we need calendars, how animals tell the time, why leaves fall in autumn and how the time zones work.
(7) I Wonder Why Stars Twinkle
(8) I Wonder Why The Wind Blows
Designed to amuse and intrigue the young reader, this book combines cartoons with facts and simple analogies to provide an introduction to the lives of the dinosaurs. Dinosaur fans will quickly find out why some dinosaurs ate stones in this prehistoric problem solver.
(10) I Wonder Why Volcanoes Blow Their Tops
Why are twisters so dangerous? What makes floods happen in a flash? What was the Dust Bowl? How big can waves get? Find out the answers to these and many more questions about volcanoes, tsunamis, earthquakes, and extreme weather. A wealth of information is backed up with stunning, high-quality artwork, fun facts, and lively cartoons.
(11) I Wonder Why My Tummy Rumbles
Colourful, surprising and full of information the I Wonder Why books have set thousands of young minds buzzing. I Wonder Why My Tummy Rumbles combines cartoons with facts and simple analogies to provide an introduction to the mysteries of the human body.
(12) I Wonder Why Pirates Wore Earrings
This brand-new addition to the IWW series is a whirlwind journey through the history of pirates and smugglers, from ancient times all the way to the present day. Readers will learn all about life on board a pirate ship, the jobs that pirates did, how they attacked other ships and stole their cargo, how they were caught and punished, and answers to many more of the best pirate questions. The question and answer format, entertaining illustrations, and open-anywhere format make this perfect for reluctant readers and pirate lovers alike. 
(13) I Wonder Why Soap Makes Bubbles
Colourful, surprising and full of information the I Wonder Why books have set thousands of young minds buzzing. I Wonder Why Soap Makes Bubbles is the perfect introduction to science, featuring rainbows, fizzy drinks, musical instruments and much more.
(14) I Wonder Why Countries Fly Flags
The world is a fascinating place, and I Wonder Why Countries Fly Flags uses some irresistible questions to get kids thinking about the world beyond their doorstep. From the basics on what makes a country, to interesting customs and cultures around the world, each question delivers an entertaining and thought-provoking answer that is sure to get kids talking. The open-anywhere format, accessible text, and entertaining illustrations make this a great choice for casual browsing or focused learning.
(15) I Wonder Why Zippers Have Teeth
It is hard for kids to imagine that everything they see and use was once invented by someone. From computer games to ball point pens, Teddy bears to drinking straws, I Wonder Why Zippers Have Teeth clues kids into the behind-the-scenes people and stories behind many objects they use every day. The question and answer format is great for further discussion, the entertaining pictures keep the pages turning. It will change the way readers think about the things they use, and hopefully inspire a few to dream up some new ones!
