1A Chapter 4: Numbers to 20

Plan using the 4C Math Mastery Method!

CLICK HERE to access the planning guide for this chapter that includes resources, video and so much more!

4A Count to 20

Teen Numbers as Ten and Some More


4B Compare and Order Numbers

Comparing Three Numbers Within 20 Using Greatest and Least


Use these educator videos to expand the chapter:

  • Subitizing (located in Chapter 1)
  • Developing Teen Number Concepts

4B Compare and Order Numbers

PM Exclusive: Comparing Numbers within 20 (THINK pg. 124)

Available Resources:

Addition and Subtraction Fluency Resources

  • Number Strings 11-20
  • Ten and Some More
  • Pick 3- Numbers to 20
  • Decomposing Numbers to 20
  • How Many More?
  • How Many Fewer?

Day Zero: Grades K-2

  • Place Value War (2-Digit)

Place Value Bundle

Free Resources:


Complete and Continue