Read and find out about how we know what dinosaurs looked like in this colorfully illustrated nonfiction picture book.

Dinosaurs roamed the earth millions of years ago. Then suddenly they all died out. How do we know now what they looked like? How do we know that they really existed at all? Read and find out how scientists have proven the existence of dinosaurs by studying fossil remains. Each new fossil find helps them to piece together a picture of what the world was like millions of years ago.

As Children's Books and Their Creators put it: Aliki "treats complex topics clearly and succinctly while providing lively pictures, with informative details and humorous elements often appearing in 'balloons.'" Aliki's books continue to speak to today's young readers.

This is a clear and appealing science book for early elementary age kids, both at home and in the classroom. It's a Level 2 Let's-Read-and-Find-Out, which means the book explores more challenging concepts for children in the primary grades. The 100+ titles in this leading nonfiction series are:

• hands-on and visual
• acclaimed and trusted
• great for classrooms

Top 10 reasons to love LRFOs:

• Entertain and educate at the same time
• Have appealing, child-centered topics
• Developmentally appropriate for emerging readers
• Focused; answering questions instead of using survey approach
• Employ engaging picture book quality illustrations
• Use simple charts and graphics to improve visual literacy skills
• Feature hands-on activities to engage young scientists
• Meet national science education standards
• Written/illustrated by award-winning authors/illustrators & vetted by an expert in the field
• Over 130 titles in print, meeting a wide range of kids' scientific interests

Books in this series support the Common Core Learning Standards, Next Generation Science Standards, and the Science, Technology, Engineering, and Math (STEM) standards. Let's-Read-and-Find-Out is the winner of the American Association for the Advancement of Science/Subaru Science Books & Films Prize for Outstanding Science Series.