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Science lesson plan · 3rd grade (Year 4 in England) · 30 minutes

Pollination and seed dispersal

Plants

CCSS NGSS.2-LS2-2CCSS NGSS.3-LS1-1England: KS2 Y3 Plants

Objective and success criteria

Students will: Pollination and seed dispersal.

  • 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: Parts of a plant

Leads to: Plant reproduction: seeds versus runners, bulbs, tubers and cuttings

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

Warm-up · 4 min

  • Quick retrieval from earlier learning (Parts of a plant). Students answer on mini whiteboards.
  • Show answers together and note who needs support in the main task.
  1. The trunk of a tree is a very thick… (leaf / flower / stem / root) → stemPrompt: It holds the tree up.
  2. Plant parts: which statement is true? (Roots grow up towards the sky. / Only flowers are part of a plant. / Trees are not plants. / A tree trunk is a stem.) → A tree trunk is a stem.Prompt: Picture a plant from its roots to its flower.
  3. Which part of a plant takes in water from the soil? (the stem / the leaves / the flower / the roots) → the rootsPrompt: Which part is under the ground?

Hook · 3 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: Pollination and seed dispersal. Read the success criteria together.

I do: model it · 7 min

  • Work through the example out loud, saying why you do each step, not just what you do.
  • Example: How are the seeds of this plant mainly spread: burdock burrs?
  • Step 1: Hooked seeds stick to fur; seeds in tasty fruit are eaten and dropped elsewhere; nuts are buried and forgotten.
  • Step 2: So the answer is: animals
  • Answer: animals
  • Pause after each step and ask a student to say what comes next.

We do: guided practice · 6 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. How are the seeds of this plant mainly spread: water lily? (wind / animals / water / exploding pods) → waterPrompt: Are the seeds light and fluffy, hooked or tasty, able to float, or in a pod?
  2. Grass flowers are small and green with no scent. How are they pollinated? (they are never pollinated / by the wind / by bees / by birds only) → by the windPrompt: They do not need to attract insects.

You do: independent practice · 7 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 6 questions are on the student sheet below, with answers in the key.

Exit ticket · 3 min

  • Two questions on their own. Sort answers into got it / nearly / not yet to plan the next lesson.
  1. Which plant's seeds are mainly spread by animals? (burdock burrs / dandelion / broom pods / willowherb) → burdock burrsPrompt: Think about the shape of each seed or fruit.
  2. Grass flowers are small and green with no scent. How are they pollinated? (by birds only / by the wind / they are never pollinated / by bees) → by the windPrompt: They do not need to attract insects.

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: Parts of a plant.
  • 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

  • Move on to: Plant reproduction: seeds versus runners, bulbs, tubers and cuttings.
  • 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-3.

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

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Pollination and seed dispersal

Name

Date

Score/ 6

  1. Question 1

    How are the seeds of this plant mainly spread: gorse?

    • A. wind
    • B. animals
    • C. water
    • D. exploding pods
  2. Question 2

    Which plant's seeds are mainly spread by wind?

    • A. sycamore (maple)
    • B. broom pods
    • C. burdock burrs
    • D. sea bean
  3. Question 3

    Grass flowers are small and green with no scent. How are they pollinated?

    • A. they are never pollinated
    • B. by birds only
    • C. by bees
    • D. by the wind
  4. Question 4

    How are the seeds of this plant mainly spread: water lily?

    • A. wind
    • B. animals
    • C. water
    • D. exploding pods
  5. Question 5

    Which plant's seeds are mainly spread by exploding pods?

    • A. willowherb
    • B. thistle
    • C. cherries
    • D. broom pods
  6. Question 6

    Why do many flowers have bright petals and a sweet smell?

    • A. to take in water
    • B. to keep warm
    • C. to attract insects that carry pollen
    • D. to scare animals away

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Answer key: Pollination and seed dispersal

  1. 1. D. exploding pods

  2. 2. A. sycamore (maple)

  3. 3. D. by the wind

  4. 4. C. water

  5. 5. D. broom pods

  6. 6. C. to attract insects that carry pollen