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Science lesson plan · 4th grade (Year 5 in England) · 60 minutes

Plant structures for growth, survival and reproduction

Plants

CCSS NGSS.4-LS1-1England: KS2 Y3 Plants

Objective and success criteria

Students will: Plant structures for growth, survival and reproduction.

  • 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: How plants protect themselves

Leads to: the next skill in this area.

Materials: Real plants or seeds, Hand lenses, Mini whiteboards, A diagram or short video clip of the idea, Printed student sheet (below).

Warm-up · 6 min

  • Quick retrieval from earlier learning (How plants protect themselves). Students answer on mini whiteboards.
  • Show answers together and note who needs support in the main task.
  1. How is this plant part protected: a pine tree wound? (tiny stinging hairs / sticky sap (resin) / thick, tough bark / spines instead of flat leaves) → sticky sap (resin)Prompt: What would hurt or annoy an animal trying to eat it?
  2. Some plants taste very bitter. How does this help them? (It makes their flowers bigger. / Animals learn not to eat them. / It helps them make food. / It makes them taller.) → Animals learn not to eat them.Prompt: Would you take a second bite of something horrible?
  3. True or false? Nettles sting to stop animals eating them. (True / False) → TruePrompt: Plants cannot move. How else could they stay safe?

Hook · 6 min

  • Bring in a plant that has been kept in the dark next to one in the light, and ask what happened.
  • Share the objective: Plant structures for growth, survival and reproduction. Read the success criteria together.

I do: model it · 12 min

  • Work through the example out loud, saying why you do each step, not just what you do.
  • Example: What does this structure do for the plant: thorns?
  • Step 1: So the answer is: stop animals eating the plant
  • Answer: stop animals eating the plant
  • Pause after each step and ask a student to say what comes next.

We do: guided practice · 12 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. What does this structure do for the plant: bark? (curl around supports so the plant can climb / attract pollinators so seeds can form / anchor the plant and take in water and minerals / protects the trunk from damage and disease) → protects the trunk from damage and diseasePrompt: Is it for growing, staying safe, or making new plants?
  2. What is this structure mainly for: tendrils climbing towards light? (growth / protection / reproduction) → growthPrompt: Does it help the plant grow, stay safe, or make seeds?

You do: independent practice · 17 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 8 questions are on the student sheet below, with answers in the key.

Exit ticket · 7 min

  • Two questions on their own. Sort answers into got it / nearly / not yet to plan the next lesson.
  1. What does this structure do for the plant: roots? (protects seeds and helps spread them / attract pollinators so seeds can form / stops the leaves losing too much water / anchor the plant and take in water and minerals) → anchor the plant and take in water and mineralsPrompt: Is it for growing, staying safe, or making new plants?
  2. What is this structure mainly for: leaves catching light? (growth / protection / reproduction) → growthPrompt: Does it help the plant grow, stay safe, or make seeds?

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: How plants protect themselves.
  • Use concrete materials: real plants or seeds.
  • 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-4.

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

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Plant structures for growth, survival and reproduction

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Score/ 8

  1. Question 1

    What does this structure do for the plant: roots?

    • A. attract pollinators so seeds can form
    • B. stop animals eating the plant
    • C. anchor the plant and take in water and minerals
    • D. stops the leaves losing too much water

  2. Question 2

    Why do many trees in cold places drop their leaves in autumn (fall)?

    • A. To save water and avoid frost damage when the ground is frozen.
    • B. Because birds eat them.
    • C. To catch more sunlight in winter.
    • D. Because leaves are too heavy.

  3. Question 3

    What is this structure mainly for: bitter-tasting leaves?

    • A. growth
    • B. protection
    • C. reproduction

  4. Question 4

    What does this structure do for the plant: fruit?

    • A. protects seeds and helps spread them
    • B. anchor the plant and take in water and minerals
    • C. stops the leaves losing too much water
    • D. attract pollinators so seeds can form

  5. Question 5

    Why do trees in rainforests often have huge leaves with pointed tips?

    • A. Big leaves catch light in the shade; pointed tips let rain drip off.
    • B. To store snow.
    • C. To stop pollination.
    • D. To keep warm in winter.

  6. Question 6

    What is this structure mainly for: sharp spines?

    • A. growth
    • B. protection
    • C. reproduction

  7. Question 7

    What is this structure mainly for: stinging hairs?

    • A. growth
    • B. protection
    • C. reproduction

  8. Question 8

    What does this structure do for the plant: flowers?

    • A. protects the trunk from damage and disease
    • B. anchor the plant and take in water and minerals
    • C. attract pollinators so seeds can form
    • D. stops the leaves losing too much water

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Answer key: Plant structures for growth, survival and reproduction

  1. 1. C. anchor the plant and take in water and minerals

  2. 2. A. To save water and avoid frost damage when the ground is frozen.

  3. 3. B. protection

  4. 4. A. protects seeds and helps spread them

  5. 5. A. Big leaves catch light in the shade; pointed tips let rain drip off.

  6. 6. B. protection

  7. 7. B. protection

  8. 8. C. attract pollinators so seeds can form