Students learnÂ how to work out the area of a rectangle as a product of its length and width.

As learning progresses, they learn how to write the area as the product of two expressions.

**Differentiated Learning Objectives**

- All students should be able to measure the area of a rectangle by counting the squares inside.
- Most students should be able to calculate the area of a rectangle as a product of its length and width.
- Some students should be able to write the area as an expression