Students learn how to write mathematical formulae using written descriptions.

Later, as learning progresses they begin to associate mathematical operations with keywords such as total, difference, shared between and product.

**Differentiated Learning Objectives**

- All students should be able to write a formula involving the sum and difference of two or more terms.
- Most students should be able to write a formula involving the product and quotient of two of more terms.
- Some students should be able to write a formula involving a products, quotients, differences and sums.