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Science lesson plan · 5th grade (Year 6 in England) · 45 minutes

Shadow length and direction through the day

Space

CCSS NGSS.5-ESS1-2England: KS2 Y5 Earth and spaceEngland: KS2 Y3 Light

Objective and success criteria

Students will: Shadow length and direction through the day.

  • I can answer questions on today's skill on my own, without help.
  • I can explain each step and say why it works.
  • I can check my answer and spot a mistake.

Before and after

Needs first: Day and night; The Sun's path across the sky in a day

Leads to: the next skill in this area.

Materials: Torch and ball for a Sun-Earth-Moon model, Space images, Mini whiteboards, A diagram or short video clip of the idea, Printed student sheet (below).

Warm-up · 5 min

  • Quick retrieval from earlier learning (Day and night; The Sun's path across the sky in a day). Students answer on mini whiteboards.
  • Show answers together and note who needs support in the main task.
  1. When it is daytime in the UK, it is night-time in… (New Zealand / France / Ireland / Spain) → New ZealandPrompt: Which place is on the opposite side of the world?
  2. The Sun rises at 05:30 and sets at 21:00. How many hours of daylight are there? Give your answer in hours as a decimal (e.g. 12.5). → 15.5 hPrompt: Count the whole hours first, then the extra minutes.
  3. Why does the Sun seem to move across the sky? (The wind pushes it / The Earth is rotating / It is falling / The Sun orbits the Earth each day) → The Earth is rotatingPrompt: Think about watching trees from a moving train.

Hook · 5 min

  • Ask why we see the Moon change shape over a month.
  • Share the objective: Shadow length and direction through the day. Read the success criteria together.

I do: model it · 10 min

  • Work through the example out loud, saying why you do each step, not just what you do.
  • Example: At midday in summer, shadows are shorter than at midday in winter. Why?
  • Step 1: A higher Sun casts shorter shadows.
  • Step 2: So the answer is: The Sun climbs higher in the sky in summer.
  • Answer: The Sun climbs higher in the sky in summer.
  • Pause after each step and ask a student to say what comes next.

We do: guided practice · 10 min

  • Do these together. Students try each step on whiteboards before you reveal it.
  • Use the hints as prompts rather than giving the answer.
  1. In the morning the Sun is in the east. Which way does a tree's shadow point? (east / straight up / west / it has no shadow) → westPrompt: Shadows point away from the light source.
  2. People once used shadow sticks (sundials) to tell the time. Why did this work? (The stick knew the time. / Shadows only appear on the hour. / The shadow moves in a regular pattern as Earth turns. / The Sun stops every hour.) → The shadow moves in a regular pattern as Earth turns.Prompt: Does the shadow move the same way every sunny day?

You do: independent practice · 10 min

  • Students work on the student sheet. Circulate and check the first two answers of every student early.
  • Students who finish: write a question of their own for a partner, with the answer.

The 7 questions are on the student sheet below, with answers in the key.

Exit ticket · 5 min

  • Two questions on their own. Sort answers into got it / nearly / not yet to plan the next lesson.
  1. At midday in summer, shadows are shorter than at midday in winter. Why? (The Sun climbs higher in the sky in summer. / Objects shrink in summer. / The Sun is closer in summer. / There is more light in winter.) → The Sun climbs higher in the sky in summer.Prompt: Compare the Sun's highest point in each season.
  2. Why do shadows change length during the day? (Objects grow during the day. / Earth spins, so the Sun's height in the sky changes. / The Sun gets bigger at noon. / Clouds stretch the shadows.) → Earth spins, so the Sun's height in the sky changes.Prompt: When the light comes from low down, what happens to the shadow?

Watch out for

  • Everyday meanings of words getting in the way of the science meaning: define key words explicitly.
  • Remembering facts without the reason: ask "why?" and "what is the evidence?"

Support and stretch

Support

  • Review first: Day and night.
  • Use concrete materials: torch and ball for a sun-earth-moon model.
  • Give the first step of each question, or a partly worked example to finish.
  • Pair with a confident partner for the guided practice.

Stretch

  • Explain a common mistake in writing and how to fix it.
  • Write a word problem that uses today's skill, then solve a partner's.

Homework and more practice

Free online practice with hints and printable worksheets for this skill: eurekami.com/science/grade-5.

Free lesson plan from eurekami.com/lesson-plan-builder

eurekami

Shadow length and direction through the day

Name

Date

Score/ 7

  1. Question 1

    How much shorter was the shadow at 12:00 than at 08:00?

    Shadow length (cm)02040608010012014016018017908:008610:004812:008614:0017616:00

    Answercm

  2. Question 2

    A class measured the shadow of a 1 m stick every two hours on a sunny day. When was the shadow longest?

    Shadow length (cm)02040608010012014016015008:007710:003912:008214:0014216:00
    • A. 08:00
    • B. 10:00
    • C. 12:00
    • D. 14:00
    • E. 16:00
  3. Question 3

    People once used shadow sticks (sundials) to tell the time. Why did this work?

    • A. The shadow moves in a regular pattern as Earth turns.
    • B. Shadows only appear on the hour.
    • C. The stick knew the time.
    • D. The Sun stops every hour.
  4. Question 4

    A class measured the shadow of a 1 m stick every two hours on a sunny day. When was the shadow shortest?

    Shadow length (cm)02040608010012014016018016508:005710:003112:006114:0015616:00
    • A. 08:00
    • B. 10:00
    • C. 12:00
    • D. 14:00
    • E. 16:00
  5. Question 5

    In the morning the Sun is in the east. Which way does a tree's shadow point?

    • A. straight up
    • B. it has no shadow
    • C. east
    • D. west
  6. Question 6

    Why do shadows change length during the day?

    • A. Clouds stretch the shadows.
    • B. Earth spins, so the Sun's height in the sky changes.
    • C. Objects grow during the day.
    • D. The Sun gets bigger at noon.
  7. Question 7

    At midday in summer, shadows are shorter than at midday in winter. Why?

    • A. The Sun climbs higher in the sky in summer.
    • B. There is more light in winter.
    • C. The Sun is closer in summer.
    • D. Objects shrink in summer.

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Answer key: Shadow length and direction through the day

  1. 1. 131 cm

  2. 2. A. 08:00

  3. 3. A. The shadow moves in a regular pattern as Earth turns.

  4. 4. C. 12:00

  5. 5. D. west

  6. 6. B. Earth spins, so the Sun's height in the sky changes.

  7. 7. A. The Sun climbs higher in the sky in summer.