Common Core
3.OA.D.9
2 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.
Grade 3 Math · Chapter 3 · Lesson 8
The tables are full of patterns, and each one has a reason.
Grade 3 Math · Chapter 7 · Lesson 4
Spotting a pattern is half. Saying why is the other half.