What is the difference between big and small? How are big, bigger, and biggest different? Young readers will discover the differences between these opposites and more in Science Kids- Big and Small. Big and Small is part of the Let’s Read collection of media enhanced books designed for children ages 5 to 7. These books were created to inspire beginning readers to become independent readers. The AV2 Spanish language collection gives emerging bilingual readers access to both a printed Spanish book and an eBook that provides both Spanish and English translations of the text. Simply enter the book code found on page 2 of this book at www.av2books.com to unlock your eBook. With the click of a button, this eBook can switch between Spanish and English text. Readers can use the eBook to learn Spanish or English vocabulary and sentence structure.