### Setting up and Solving Equations

Students learn how to set up an equation using written descriptions and known geometrical facts. Once the equation is formed they use the balance method to find the solution.At the start of the lesson students use their powers of intuition to find the value of an unknown within a number pyramid. In the main they learn how to set up and solve two step linear equations. The plenary challenges students to combine multiple equations to solve a larger problem.

##### Differentiated Learning Objectives

- All students should be able to set up and solve an equation in the form x ± a = c
- Most students should be able to set up and solve an equation using written descriptions.
- Some students should be able to set up equations by simplifying expressions.

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