Justifying mathematical reasoning
Construct and follow multi-step mathematical arguments; identify errors in reasoning and explain why a method works or does not work
Teaching approaches
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1 approach
If your child hears another child's explanation for how they solved a maths problem, can your child say whether the reasoning makes sense — and if not, point out exactly where the logic goes wrong?
Construct and follow multi-step mathematical arguments; identify errors in reasoning and explain why a method works or does not work
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5 before · 1 after
Before
This concept
Check understanding
- Explain step by step why a columnar addition method gives the correct answer
- Find and explain an error in a worked example (e.g. incorrect regrouping)
- Construct a simple argument for why a general statement is true (e.g. 'adding two even numbers always gives an even number')
“If your child hears another child's explanation for how they solved a maths problem, can your child say whether the reasoning makes sense — and if not, point out exactly where the logic goes wrong?”
Curriculum record
- Type
- Meta
- Subject
- Mathematics
- Domain
- Mathematical Thinking
- Age range
- Ages 7–8