『바로 독해 배경지식편 Level 1』
Unit 01 Secrets of the Insect World
Unit 02 Enjoying the Holidays
Unit 03 Pictures on the Wall
Unit 04 Secrets of Trees
Unit 05 Amazing Architecture
Unit 06 Millions of Years Ago
Unit 07 Stories Behind Sports
Unit 08 More Than Just Words
Unit 09 What’s in Your Mind?
Unit 10 Meanings Across Cultures
Unit 11 Trash into Treasure
Unit 12 Inside Your Ears
Unit 13 Beyond the Earth
Unit 14 Finding Your Career
Unit 15 The Story of Cheese
Unit 16 Science Around Us


『바로 독해 배경지식편 Level 2』
Unit 01 Plants with Two Sides
Unit 02 Smart Digital Life
Unit 03 Science in Our Daily Life
Unit 04 Enjoy Active Hobbies
Unit 05 Dreams and Careers
Unit 06 Water for Everyone
Unit 07 The Story Behind Daily Items
Unit 08 Save Energy, Save Earth
Unit 09 Amazing Lives of Animals
Unit 10 All About Muscles
Unit 11 Home Alone
Unit 12 Growing Step by Step
Unit 13 Interesting Math
Unit 14 Art in Action
Unit 15 The Mind Behind Decisions
Unit 16 Ancient Wonders


『바로 독해 배경지식편 Level 3』
Unit 01 What Movies Tell Us
Unit 02 How Memory Works
Unit 03 The Prince of Pop Art
Unit 04 Hidden Wonders of History
Unit 05 Near the Volcano
Unit 06 The Story Behind Coffee
Unit 07 For Our Planet
Unit 08 Up to Space
Unit 09 Need a Shot?
Unit 10 Hello, Spring
Unit 11 How Inventions Evolve
Unit 12 Read for Fun
Unit 13 What Is Your Name?
Unit 14 Feel Better Soon!
Unit 15 The Living Filter
Unit 16 Time to Bake


『바로 독해 배경지식편 Level 4』
Unit 01 Good Foods, Healthy Life
Unit 02 Sweat and Health
Unit 03 Amazing Places to Visit
Unit 04 The History of Maps
Unit 05 Beyond the Classroom
Unit 06 The Story of Silk
Unit 07 Behind the Olympic Games
Unit 08 More Than Just Clothes
Unit 09 The World of the Internet
Unit 10 Halloween Stories
Unit 11 Self-Expression in Art
Unit 12 All About Greenland
Unit 13 Looking into Space
Unit 14 Ocean Giant, the Whale
Unit 15 Math Around Us
Unit 16 How We Spend Money