Equality in an equation
I can appreciate that in an equation the two sides of the equals sign balance.
Equality in an equation
I can appreciate that in an equation the two sides of the equals sign balance.
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Lesson details
Key learning points
- The equals sign means that the two sides of the equation have the same value.
- This can be described as the expressions balancing.
- The equality of the expressions can be represented with a bar model.
- It is possible to rearrange equations to find the family of alternative versions of the equation.
Keywords
Equation - An equation is used to show two expressions that are equal to each other.
Common misconception
10 - x = 2 means that 2 - x = 10
Using bar models can help pupils understand rearranging additive relationships at an early stage.
To help you plan your year 8 maths lesson on: Equality in an equation, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 8 maths lesson on: Equality in an equation, 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.
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The assessment exit quiz will test your pupils' understanding of the key learning points.
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Explore more key stage 3 maths lessons from the Solving linear equations unit, dive into the full secondary maths curriculum, or learn more about lesson planning.
Licence
Lesson video
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Starter quiz
6 Questions
A -
$$3(x + 12) = 57$$
B -
$$x + 12 + 2x + 24 = 19 + 2x + 24$$
C -
$$x + 12 + 38 = 19 + 38$$
D -
$$4(x + 12) = 76$$
Exit quiz
6 Questions
