## Lesson: Order Whole Numbers to 100

Developing the Concept

Once the children are comfortable putting numbers in order, introduce ordering numbers on the number line.

**Materials:** large or small cards numbered 0 – 20 and floor or wall number line

**Preparation:** Prepare a number line on the floor or wall. Place the numbers 0 and 20 on the number line. Put the other number cards face up in random order in the chalk tray or on a table.

**Prerequisite Skills and Concepts:** Understand order and count from 0 – 10.

You may choose to do this activity by having the children stand in place on the floor number line holding the large numbers, or you can place the smaller numbers on the wall number line.

**Wrap-Up and Assessment Hints**

Ordering numbers is an essential skill for all mathematical computation. Provide adequate practice and challenge to ensure that children master the skill. Emphasize to children how important it is that they become proficient in ordering the set of numbers from 0 to 100 before they move on to greater numbers.