Lesson 5 Contents Interval number Interval quality ID natural intervals Write natural intervals Summary Activity PDF Practice Sheets Identify natural intervals Key to Identify natural intervals Write natural intervals Key to Write natural intervals Written Assignments Assignment 5.1 Key to Assignment 5.1 Assignment 5.2 Enrichment Assignment 5 Key to Enrichment Assignment 5 Sample Midterm A Sample Midterm A (Lessons 1-5) Sample Midterm A Key