Common Core
3.9.D.i
4 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.
Grade 3 Reading · Chapter 1 · Lesson 1
The one idea that holds every sentence together.
Grade 3 Reading · Chapter 1 · Lesson 2
Telling a Detail from the Main Idea
Details are true, and that is exactly what makes them tempting.
Grade 3 Reading · Chapter 1 · Lesson 3
Often the main idea is not written anywhere. You have to build it.
Grade 3 Reading · Chapter 1 · Lesson 4
Each paragraph has one. The whole text has one above them.