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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 rose stem? (sharp thorns / sticky sap (resin) / prickly edges / thick, tough bark) → sharp thornsPrompt: What would hurt or annoy an animal trying to eat it?
  2. Some plants taste very bitter. How does this help them? (It helps them make food. / It makes their flowers bigger. / Animals learn not to eat them. / It makes them taller.) → Animals learn not to eat them.Prompt: Would you take a second bite of something horrible?
  3. True or false? Thorns help a plant take in water. (True / False) → FalsePrompt: 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: thorns? (protects the trunk from damage and disease / stop animals eating the plant / stops the leaves losing too much water / protects seeds and helps spread them) → stop animals eating the plantPrompt: Is it for growing, staying safe, or making new plants?
  2. What is this structure mainly for: winged seeds? (growth / protection / reproduction) → reproductionPrompt: 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 is this structure mainly for: colourful petals? (growth / protection / reproduction) → reproductionPrompt: Does it help the plant grow, stay safe, or make seeds?
  2. What does this structure do for the plant: fruit? (stop animals eating the plant / anchor the plant and take in water and minerals / protects seeds and helps spread them / curl around supports so the plant can climb) → protects seeds and helps spread themPrompt: Is it for growing, staying safe, or making new plants?

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

Name

Date

Score/ 8

  1. Question 1

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

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

  2. Question 2

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

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

  3. Question 3

    What does this structure do for the plant: roots?

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

  4. Question 4

    Cactus plants have thick, fleshy stems and spines instead of wide leaves. How does this help in a desert?

    • A. They catch more rain on wide leaves.
    • B. They store water and lose very little.
    • C. They attract more animals to eat them.
    • D. They grow faster in the cold.

  5. Question 5

    What is this structure mainly for: roots taking in water?

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

  6. Question 6

    What does this structure do for the plant: thorns?

    • A. stop animals eating the plant
    • B. curl around supports so the plant can climb
    • C. protects seeds and helps spread them
    • D. anchor the plant and take in water and minerals

  7. Question 7

    What is this structure mainly for: a stem carrying water up?

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

  8. Question 8

    Water lilies have air spaces in their stems and leaves. How does this help?

    • A. They keep fish away.
    • B. They make the water warm.
    • C. The leaves float on the surface to reach sunlight.
    • D. They sink to the bottom.

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Answer key: Plant structures for growth, survival and reproduction

  1. 1. C. To save water and avoid frost damage when the ground is frozen.

  2. 2. B. protection

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

  4. 4. B. They store water and lose very little.

  5. 5. A. growth

  6. 6. A. stop animals eating the plant

  7. 7. A. growth

  8. 8. C. The leaves float on the surface to reach sunlight.