# Lesson overview:To use the 'Make ten' strategy to add two 1-digit numbers (Part 1)

- In this lesson, we will identify expressions that are less than, equal to and greater than 10 and then apply the 'Make ten' strategy to add numbers.

## Core Content

- In this lesson, we will identify expressions that are less than, equal to and greater than 10 and then apply the 'Make ten' strategy to add numbers.

## Addition and subtraction within 20:

- To add by counting on using a number line
- To subtract by counting back using a number line
- To add a 1-digit number to a teens number using a known fact
- To subtract a 1-digit number from a teens number using a known fact
- To use the 'Make ten' strategy to add two 1-digit numbers (Part 1)
- To use the 'Make ten' strategy to add two 1-digit numbers (Part 2)
- To use the 'Make ten' strategy to subtract a 1-digit number from a teen number (Part 1)
- To use the 'Make ten' strategy to subtract a 1-digit number from a teen number (Part 2)
- To use mathematical models and strategies for addition
- To use mathematical models and strategies for subtraction