Science // Weather & Climate

Temperature & Thermometers

Understand temperature as how hot or cold something is, that a thermometer measures temperature, and use words like hot, warm, cool, and cold to describe how the air feels on different days

Ages
5 to 7
Type
Concept
Builds on
0 topics
Leads to
3 topics

Quick check

If the learner saw a thermometer outside, could they explain that it tells us how hot or cold the air is, and describe today as hot, warm, cool, or cold?

Ask this to see whether the topic is secure.

Topic // Mastery

What mastery looks like

What a learner can do once this topic is secure.
  • Explain that temperature describes how hot or cold something is
  • Identify a thermometer as the tool used to measure temperature
  • Use words like hot, warm, cool, and cold appropriately to describe air temperature

Topic // Map

Where this fits

What to learn first and what this topic opens up, with the reason for each link. Required links come first.
  • RequiredMust come first
  • HelpfulHelps, but not essential

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Temperature & Thermometers

Ages 5 to 7 // Concept

Leads to

3 topics
  • Using Weather InstrumentsRequired

    Weather & Climate // Ages 7 to 9

    Using thermometers builds on understanding temperature concept

  • Dressing for the WeatherHelpful

    Weather & Climate // Ages 5 to 7

    Clothing choices benefit from understanding temperature

  • The Water CycleHelpful

    Weather & Climate // Ages 7 to 9

    Water cycle evaporation relates to temperature (heat drives evaporation)

Topic // Research-informed

Teaching notes

From the Marble Skill Taxonomy. These notes have not been validated in classrooms, so treat them as a starting point for your own judgement.

The approach

For ages 5–7, teach temperature as how hot or cold something is, that a thermometer is the tool that measures it, and the use of hot/warm/cool/cold to describe how the air feels on different days. Keep observation relative and qualitative (warmer/cooler/about the same), not exact °C. This is a design choice that stays within the K-ESS2-1 assessment boundary, which limits quantitative observations [curriculum wording omitted; reference K-ESS2-1]. Ground the word in felt experience first, then connect that sensation to a thermometer's reading rising when warmer and falling when cooler, and build hot–warm–cool–cold as one continuous scale rather than two opposite boxes.

Common misconceptions

  • 'Hot and cold are opposite THINGS' rather than points on one temperature scale — build the continuum (warm and cool are in between).
  • 'What feels colder IS colder' — metal feels colder than wood at the same temperature; sensation is an unreliable exact measure (that's why we use a thermometer).
  • 'The thermometer makes/adds heat' or controls temperature — it only measures and reports it.
  • 'Higher number = the thermometer is bigger/fuller of liquid, not hotter' — tie the rising column explicitly to warmer.
  • 'Temperature and weather are the same thing' — temperature is one PART of the weather, alongside rain, wind, cloud.

Useful representations

  • A large thermometer whose coloured column rises and falls, with a hot–warm–cool–cold band beside it (no fine °C scale needed).
  • An ordering strip: freezer → fridge → room → warm bath, placing everyday things on a hot–cold scale.
  • Paired 'today' scenes (sunny beach vs frosty morning) with the thermometer reading higher/lower for each.
  • Felt-experience cards (ice cube, warm drink, cool shade, hot sand) matched to temperature words.

Teaching practices

  • Ground temperature in FELT experience first (hold something warm vs cool; a sunny vs shady spot) before introducing the instrument — the word names a sensation the child already knows.
  • Introduce the thermometer as a tool whose reading rises when warmer and falls when cooler; keep it relative (higher/lower) not precise °C, matching the K-ESS2-1 'warmer/cooler' boundary.
  • Practise ordering hot–warm–cool–cold as a scale (e.g. bath, room, fridge, freezer) so temperature is understood as a continuum, not two boxes.
  • Surface the classic hot/cold conflation: what FEELS cold (metal) isn't necessarily colder than what feels warm (wood) at the same temperature — at 5-7 keep this light but avoid reinforcing 'metal is always colder'.
  • Tie readings to weather routine: check whether today is warmer or cooler than yesterday, connecting the instrument to lived weather.
  • Avoid number precision and negative numbers at this age; 'warmer/cooler/about the same' is the right grain.

Activities to try

  1. 1

    Warm it up, cool it down: watch the thermometer respond

    Why it works: Temperature is how hot or cold something is, it can be ordered along one scale from cold to hot, and a thermometer is a tool that reports it — the reading moves up when warmer and down when cooler, so 'higher means warmer.'

    1. Start from a plain scene with a large friendly thermometer beside it whose coloured column can rise and fall against a hot–warm–cool–cold band (no fine °C scale).
    2. Warm the scene (e.g. drag the sun high into the sky, brighten the day) and watch the thermometer's column climb up onto 'warm', then 'hot'.
    3. Cool the scene (slide the sun behind a cloud, or move the character and the thermometer into the shade) and watch the column sink lower, toward 'cool'.
    4. Drop everyday things onto a shelf — an ice cube, a mug of cocoa, a cool drink — and touch the thermometer to each one to see it read lower or higher for each.
    5. Line those things up coldest to hottest, and compare 'today vs yesterday' as higher or lower on the same thermometer.
  2. 2

    Feel first, then name it

    Why it works: The word 'temperature' names a sensation children already know, and warm and cool are the in-between points between hot and cold — it is a continuum, not two boxes.

    1. Hold or look at things that are clearly warm, cool or cold (a warm drink, an ice cube, a sunny spot, cool shade) and say how each feels.
    2. Match felt-experience cards — ice cube, warm drink, cool shade, hot sand — to the words hot, warm, cool, cold.
    3. Order familiar places as a scale: freezer → fridge → room → warm bath, from coldest to hottest.
    4. Decide for the air outside today whether it feels hot, warm, cool, or cold.
  3. 3

    Label the thermometer and compare two days

    Why it works: A thermometer has parts (bulb, column, scale), it reports temperature rather than creating it, and a higher reading means warmer.

    1. Explore a labelled thermometer: tap or point to the bulb, the coloured column, and the scale to learn the parts.
    2. Open a 'higher = warmer' flap or prompt that explains which way the reading moves when it gets warmer.
    3. Look at paired scenes — a sunny beach and a frosty morning — and say which thermometer reads higher and why.
    4. Describe in your own words what the thermometer does: it measures and reports how hot or cold it is; it does not make heat.

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