MA10-09 Maths Coming soon
Equations, Identities and Equivalent Expressions
MA10-09
This lesson is coming soon.
In this lesson
Distinguish an equation from an identity, and use the equate-coefficients technique to find unknown constants that make two expressions equivalent.
What it covers
- Recognising the identity symbol (≡) and distinguishing an identity (true for all values) from an equation (true for specific value(s))
- Using the equate-coefficients technique to find unknown constants that make two expressions identically equal
Key words
For: AQA GCSE 8300, Edexcel GCSE 1MA1, Eduqas GCSE C300, OCR GCSE J560
On the specification
| Board | Spec | Statement |
|---|---|---|
| AQA GCSE 8300 | A6 | Know the difference between an equation and an identity |
| Edexcel GCSE 1MA1 | A6 | 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 |
| Eduqas GCSE C300 | FA6 | 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 |
| Eduqas GCSE C300 | HA6 | 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 and proofs |
| OCR GCSE J560 | 6.01a | Understand and use the concepts and vocabulary of expressions, equations, formulae, inequalities, terms and factors. |
For teachers
This GCSE Maths lesson teaches equations, identities and equivalent expressions. By the end, students should be able to distinguish an equation from an identity, and use the equate-coefficients technique to find unknown constants that make two expressions equivalent. It works through two worked examples and the mistakes examiners report.