Map of the units:
Unit 1. A family affair
Unit 2. Leisure and pleasure
Vocabulary and grammar review Units 1 and 2
Unit 3. Happy holidays!
Unit 4. Food, glorious food
Vocabulary and grammar review Units 3 and 4
Unit 5. Studying abroad
Unit 6. The planet in danger
Vocabulary and grammar review Units 5 and 6
Unit 7. My first job
Unit 8. High adventure
Vocabulary and grammar review Units 7 and 8
Unit 9. Star performances
Unit 10. Secrets of the mind
Vocabulary and grammar review Units 9 and 10
Unit 11. Spend, spend, spend
Unit 12. Stayind healthy
Vocabulary and grammar review Units 11 and 12
Unit 13. Animal kingdom
Unit 14. House space
Vocabulary and grammar review Units 13 and 14
Unit 15. Fiesta!
Unit 16. Machine age
Vocabulary and grammar review Units 15 and 16