Lesson 2: Numbers 1-5: Number Bonds

Getting Started

Questions to Explore

  • How do we explain our thinking mathematically?
  • How do we show the value of a given quantity?

Facts and Definitions

  • A number (greater than 1) can be broken into parts.
  • Base-10 blocks: blocks that represent numbers.
  • Number bond: a picture that shows how the parts of numbers are related to the whole (part-part-whole relationship)


  • Develop a plan for counting
  • Use manipulatives and graphic organizers to show number values and solve problems


  • apple
  • base-10 blocks (kit)
  • egg carton
  • glue
  • Interactive Notebook
  • items to count
  • knife
  • laminated number bond (kit)
  • mini marshmallows* (Activity 5 - optional)
  • scissors
  • tape
  • toothpicks* (Activity 5 - optional)

* - denotes an optional material that may or may not be needed


In this lesson, your child will learn how to use a number bond and base-10 blocks to represent a given number. Begin by asking your child to show you the numbers 1 through 5 using her fingers.