2016 National Geographic -

" To me, science is fiction because sometimes it just seems unreal. Looking at bioluminescence, it's just beautiful. It's artwork." —David Gruber Secrets of the Dark Unit 3 42 14

• Cover
• Table of Contents
• Learn English with National Geographic Explorers
• Meet the Explorers
• Become Active Participants in the Classroom
• Explore the World Through Cross-Curricular Topics
• Professional Development and Technology
• Program Resources and Series Editors
• Level 1, Unit 3: Secrets of the Dark
• Level 2, Unit 1: Color Matters
• Level 3, Unit 1: Who Am I?
• Level 4, Unit 5: Why We Explore