# Lesson 5 Order Numbers 1-20

Let’s think about the order of numbers 1-20.

## Warm-up Choral Count: Count Backward

Let’s start at 10 and count backward to 1.

Let’s start at 20 and count backward to 1.

## Activity 1 Order Numbers

Write the numbers in order.

## Activity 2 Number Clues

Discuss with the other people at your number. Did you have the same clue? Are you all at the correct number? How do you know?

## Activity 3 Centers: Choice Time

Choose a center.