: For "Overcoming Obstacles," key challenges discussed include physical problems (such as the inability to walk) and psychological challenges (such as losing hope as a young boy).

Incorporate words from the unit (e.g., "transformative," "interaction," or "compensation") to meet academic standards.

The is primarily found in the Teacher Resource eText or the Teacher’s Manual

Full transcripts of the listening tracks so you can see exactly where the answers were found.

Because in the end, NorthStar 4 isn't testing your ability to match letters. It's training you to catch nuance in fast, real-world English. And that skill has no answer key at all—only practice, reflection, and the right kind of feedback.

Official answer keys are typically restricted to instructors through the Pearson English Portal . However, some educational platforms and retailers offer the following: Teacher's Manuals