Measuring temperature
Use negative numbers in context (temperature, finance, sea level); calculate intervals across zero
Lesson
Set out your lesson
“Measuring temperature means practising the idea at the table with counters or paper models and one clear check. We will demo once, then your child tries.”
Bring to the table
- Number line (−5 to 5) on paper
- A token
Extra for the adult
Worked example. On the number line, 3 is to the right of −2, so 3 is greater.
Optional challenge. For Measuring temperature, add one harder example after success.
What to notice. Keep one parent note: examples tried; results; support used. This session samples Measuring temperature, not mastery.
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Teaching approaches
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1 approach
Measuring temperature means practising the idea at the table with counters or paper models and one clear check. We will demo once, then your child tries.
Materials: Number line (−5 to 5) on paper; A token. Adult places −2 and +3 and compares which is greater. Child places three integers and says which is greater for two pairs. Done: three placements plus two correct comparisons. Stop after the fresh check; keep optional challenge for another day.
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Learning resources
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PhET Interactive Simulations · Practice link — not the full lesson
Number Line: Integers
Before you open · source notes
Number Line: Integers supports hands-on exploration for Measuring temperature. Not every lab worksheet.
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Source, access and review notes
Public PhET Interactive Simulations page. An anonymous GET on 2026-11-12 returned HTTP 200 with no login or payment prompt for this URL. Opening the link does not save practice or assess mastery. An adult should preview and guide the learner.
PhET Interactive Simulations. “Number Line: Integers.” External page; Gakuva does not copy, host, embed, or redistribute materials.
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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 10–12
Standards