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Students learn how to write a formula from a written description and use this formula to model various scenarios. As learning progresses students work with the various kinematics formulae.

This unit takes place in Term 1 of Year 11 and follows on from solving equations.

**Prerequisite Knowledge**

- solve linear equations in one unknown algebraically (including those with the unknown on both sides of the equation
- translate simple situations or procedures into algebraic expressions
- deduce expressions to calculate the nth term of linear sequence

**Success Criteria**

- substitute numerical values into formulae and expressions, including scientific formulae
- understand and use the concepts and vocabulary of expressions, equations, formulae, identities inequalities, terms and factors
- understand and use standard mathematical formulae; rearrange formulae to change the subject
- know the difference between an equation and an identity; argue mathematically to show algebraic expressions are equivalent, and use algebra to support and construct arguments

**Key Concepts**

- When substituting known values into formulae it is important to follow the order of operations.
- Students need to have a secure understanding of using the balance method when rearranging formulae. Recap inverse operations, e.g., x
^{2}=> √x - When generating formulae it is important to associate mathematical operations and their algebraic notation with key words.

**Common Misconceptions**

- Students often consider to be incorrectly calculated as 2a
^{3}as (2a)^{3}. Recap the order of operations to avoid this. - Students often have difficult generating formulae from real life contexts. Encourage them to carefully break down the written descriptions to identify key words.

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