Further algebraic terminology
I can appreciate the difference between an equation, an identity, an expression, a term and a formula.
Further algebraic terminology
I can appreciate the difference between an equation, an identity, an expression, a term and a formula.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- A single number or letter, or the product of numbers and/or variables.
- An expression contains one or more terms, where each term is separated by an operator.
- An equation is a statement that two expressions are equal, indicated by =
- An identity is an equation which is always true, regardless of the values substituted in.
- A formula is a mathematical rule or relationship connecting two or more variables.
Keywords
Term - A term is single number or letter, or the product of numbers and/or variables. Each term is separated by the operators + and –
Expression - Expressions contain one or more terms, where each term is separated by an operator.
Equation - An equation is used to show 2 expressions that are equal to each other.
Identity - An identity is an equation that holds true for all values of the variables. The symbol ≡ is used to show two expressions are equivalent and form an identity.
Formula - A formula is a rule linking sets of physical variables in context.
Common misconception
Pupils can think the formula for the number of days in a week is w=7d because a week has seven days.
Pupils should always write down exactly what the letter is representing. E.g. 'the number of days' and 'the number of weeks'. Then think about what calculation they are doing. 'To find the number of days I multiply the number of weeks by 7'. d=7w.
To help you plan your year 10 maths lesson on: Further algebraic terminology, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 10 maths lesson on: Further algebraic terminology, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
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Explore more key stage 4 maths lessons from the Algebraic manipulation unit, dive into the full secondary maths curriculum, or learn more about lesson planning.