Unit 1. Inventions
Lesson 1. What a Great Invention!
Lesson 2. Kid Inventors
Unit 2. The Natural Environment
Lesson 1. Caring for the Earth
Lesson 2. I Can Help the Earth
Unit 3. At the Airport
Lesson 1. International Airport
Lesson 2. Catching an Airplane
Unit 4. Proverbs
Lesson 1. What Wise Men Say
Lesson 2. Moral Stories and Fables
Unit 5. The Signs of the Zodiac
Lesson 1. Looking through the Sky
Lesson 2. A Chinese Fable: The Chinese Zodiac
Unit 6. Numbers and Prices
Lesson 1. All Kinds of Numbers
Lesson 2. Interesting Expressions about Money
Unit 7. Art and Music
Lesson 1. The Great Masterpieces
Lesson 2. Music Is Magic
Unit 8. Notices and Reminders
Lesson 1. Lots of Different Signs
Lesson 2. Safe Driving
Unit 9. Human Cloning
Lesson 1. Human Stem Cells
Lesson 2. To Clone or Not to Clone
Unit 10. Literature
Lesson 1. Book Genres
Lesson 2. The Inside Story