Measuring temperature
Use negative numbers in context (temperature, finance, sea level); calculate intervals across zero
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“If a bank account goes from −£45 to +£120, can your child work out the total change — counting through zero to get £165?”
Full guide and materials
- Activity. Use negative numbers in context (temperature, finance, sea level); calculate intervals across zero
What to notice. The temperature falls from 3°C to −5°C — what is the drop? (8 degrees) • Calculate the difference between a bank balance of −£120 and £350 • Order −7, −3, 0, 2, 5 on a number line and find the interval from −7 to 5
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If a bank account goes from −£45 to +£120, can your child work out the total change — counting through zero to get £165?
Use negative numbers in context (temperature, finance, sea level); calculate intervals across zero
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Check understanding
- The temperature falls from 3°C to −5°C — what is the drop? (8 degrees)
- Calculate the difference between a bank balance of −£120 and £350
- Order −7, −3, 0, 2, 5 on a number line and find the interval from −7 to 5
“If a bank account goes from −£45 to +£120, can your child work out the total change — counting through zero to get £165?”
Curriculum record
- Type
- Procedural
- Subject
- Mathematics
- Domain
- Number Representation & Place Value
- Age range
- Ages 10–11