# 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)

### Skills

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

### Materials

• 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

### Introduction

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.