Students learn about comparing positive and negative numbers and calculating the difference between the two. Throughout the lesson students use the greater than (>) and less than (<) symbols to make comparisons.

The start of the lesson is used to recap adding and subtracting two digit numbers. In the main part they use a number line and inequality symbols to compare the size of positive and negative numbers. At the end of the lesson students interpret a line graph showing the daily temperature readings in Alaska.

**Differentiated Learning Objectives**

- All students should be able to use a number line to compare the size of positive and negative numbers.
- Most students should be able to use inequality notation to compare the size of numbers.
- Some students should be able to compare the size and magnitude of positive or negative fractions and decimals.