Science // Space Systems & Earth's History

Why seasons change

Make observations at different times of year to relate the amount of daylight to the time of year, noticing longer days in summer and shorter days in winter

Ages
5 to 7
Type
Concept
Builds on
2 topics
Leads to
3 topics
Standards
2 codes

Quick check

Has the learner noticed that it's still light at bedtime in summer but dark much earlier in winter, and can they explain this pattern?

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.
  • Describe the pattern: more daylight hours in summer, fewer in winter
  • Compare sunrise/sunset times at different points in the year
  • Relate amount of daylight to seasonal changes in weather and nature

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

Before this

2 topics
  • Seasonal changesHelpful

    Earth's Systems // Ages 5 to 6

    Seasonal changes observation supports daylight pattern recognition

  • Naming the PlanetsHelpful

    Space Systems & Earth's History // Ages 5 to 8

    Relating daylight length to time of year draws on orbit and solar system vocabulary

You are here

Why seasons change

Ages 5 to 7 // Concept

Leads to

3 topics
  • Sun, Moon, and starsRequired

    Space Systems & Earth's History // Ages 6 to 7

    Must observe sun/moon/star patterns before relating daylight to time of year

  • Earth's rotation and day/nightRequired

    Space Systems & Earth's History // Ages 9 to 11

    Must observe daylight patterns before explaining them with Earth's rotation

  • Sun, Moon & StarsHelpful

    Space Exploration // Ages 5 to 7

    Curriculum daylight/seasons observation supports exploratory Sun/Moon/stars identification

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: observe and describe that there is MORE daylight in summer and LESS in winter, tying this relative pattern to the seasons and to changes in weather and nature. Stay with relative 'longer/shorter days' comparisons, not counted hours, and deliberately do NOT teach the axial-tilt cause (a later topic). Anchor in the child's lived experience across the year and keep explanations to observed daylight length, not distance from the Sun.

Common misconceptions

  • It is colder in winter because Earth is further from the Sun and warmer in summer because it is closer (the classic distance misconception — avoid seeding it here, correct it fully later).
  • Summer is hot only because the Sun is bigger or closer, not because days are longer.
  • The amount of daylight is the same all year, or day and night are always equal in length.
  • Seasons and shorter winter days are caused simply by clouds or 'it just gets cold'.

Useful representations

  • Winter vs summer daylight bars — a short bar against a long one — showing relative length.
  • A four-seasons wheel pairing day-length with weather and nature cues.
  • Paired clock faces: dark-at-wake and dark-at-tea in winter vs light in summer.
  • A year timeline marking the shortest (winter) and longest (summer) days.

Teaching practices

  • Anchor in the child's lived experience across the year ('it's dark when we get up in winter; still light at bedtime in summer'), then formalise it as a relative pattern.
  • Record simply over time — compare winter vs summer sunrise/sunset with pictures or clock faces — staying with relative 'more/less', not counting hours (matching the NGSS assessment boundary).
  • Link the amount of daylight to seasonal weather and nature changes (colder, darker winter; warmer, lighter summer) as correlated patterns.
  • Do NOT teach the tilt cause here — keep it observational; the mechanism and the distance misconception are handled in a later age-appropriate topic.
  • Use the four-seasons cycle framing so children see the pattern repeats every year.
  • Avoid seeding the 'closer to the Sun in summer' idea — keep explanations to observed daylight length, not distance.

Activities to try

  1. 1

    A year in a slider: watch the daylight grow and shrink

    Why it works: There is more daylight in summer and less in winter, and this is a smooth, repeating yearly pattern. In most places away from the equator you can see it from your own window.

    1. Drag a month handle across a year and watch a daylight bar stretch toward summer and shrink toward winter while the same garden scene shifts from a dark, short winter's day to a long, bright summer evening.
    2. Watch a little clock show it's still dark at wake-up in winter but light at bedtime in summer, with no numbers — relative length only. (December is winter and June is summer north of the equator; it is the other way round in the Southern Hemisphere.)
    3. Say out loud what you notice as you slide from winter toward summer: 'more daylight in summer, less daylight in winter.'
    4. Keep sliding forward past December into the next year, and watch the bar grow and shrink again, to see that the pattern repeats every year.
  2. 2

    Winter morning vs summer evening: two scenes side by side

    Why it works: Summer has more daylight and winter has less. You can see a clue to this in the scenes: it is still dark on a winter morning, but still light on a summer evening. To make a fair comparison, look at the same time of day in each season.

    1. Look at a two-panel scene: a dark winter morning and a light summer evening.
    2. Tap each panel to reveal a daylight bar and a clock face — short/dark for winter, long/light for summer.
    3. Describe the contrast in your own words: 'In winter it's dark when I get up; in summer it's still light at bedtime.'
  3. 3

    Record the change yourself over real weeks

    Why it works: The amount of daylight really does change across the year, and it goes together with seasonal changes in weather and nature; the pattern repeats every year.

    1. Mark on a simple chart roughly when it gets dark (soon after sunset) over several weeks, using pictures or a clock face rather than numbers. The change is easiest to see in autumn or spring.
    2. Notice whether the dark-time is getting earlier or later and say which way it is moving.
    3. Pair the daylight amount with seasonal cues — colder and darker in winter, warmer and lighter in summer — as patterns that go together.
    4. Place the shortest (winter) and longest (summer) days on a year timeline or four-seasons wheel.

Topic // Standards

Curriculum standards

Codes for the curriculum statements this topic maps to. Each publisher owns its standard text.
Next Generation Science Standards (NGSS) K-5
1-ESS1-2
The national curriculum in England: Key stages 1 and 2 framework document
Y1.Sci.SC.2

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