Subject Link 4 (2nd Edition)
A nine-level curriculum integration reading program.
- Firstly Issued2026.01
- Target LevelsIntermediate, High Intermediate

A nine-level curriculum integration reading program.
The series’ theme-based curriculum helps students to improve their language abilities and also acquire new knowledge from the interesting content presented in each of the passages.
· Thematic curriculum integration reading program
· Informative background knowledge sections
· Interesting content and useful academic vocabulary
· Well-designed comprehension and critical thinking questions
· Systematic two-step outline and summary activities
· Attractive visual aids to engage students and facilitate their learning
· Wrap-up activities with concept maps and theme project worksheets
· Workbook for more vocabulary, grammar, and reading practice
CHAPTER 1 Color
LESSON 01 How We See Color
LESSON 02 Healing with Color
LESSON 03 Dyeing Naturally
LESSON 04 The Color of Royalty
CHAPTER 2 Salt
LESSON 05 A History of Salt
LESSON 06 Keeping Winter Roads Safe
LESSON 07 The Sea of Salt
LESSON 08 Salami and Kimchi
CHAPTER 3 Sound
LESSON 09 How We Hear Sound
LESSON 10 Silent No More
LESSON 11 Listen to This!
LESSON 12 Echo and Narcissus
CHAPTER 4 Toilets
LESSON 13 The History of the Toilet
LESSON 14 World Toilet Day
LESSON 15 The Journey of Wastewater
LESSON 16 Art from a Urinal