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Science lesson plan · 3rd grade (Year 4 in England) · 45 minutes

Life cycle of a flowering plant

Plants

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

Objective and success criteria

Students will: Life cycle of a flowering plant.

  • 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: Seeds, bulbs and germination

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 · 5 min

  • Quick retrieval from earlier learning (Seeds, bulbs and germination). Students answer on mini whiteboards.
  • Show answers together and note who needs support in the main task.
  1. Is this a seed or a bulb: sunflower seed? (seed / bulb) → seedPrompt: Seeds are usually small and hard. Bulbs are rounder, with papery layers.
  2. Cress seeds are put on damp cotton wool with no soil. What happens? (Nothing, seeds need soil. / They melt. / They still germinate. / They turn into bulbs.) → They still germinate.Prompt: What do seeds really need to start growing?
  3. Which of these is a bulb? (apple pip / onion / pea / sunflower seed) → onionPrompt: Seeds come from inside fruits and pods. Bulbs are round and have papery layers.

Hook · 5 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: Life cycle of a flowering plant. 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: In the life cycle of a bean plant, what comes straight after "plant with flowers"?
  • Step 1: bean seed → root and shoot appear → seedling → plant with flowers → pods with new beans
  • Step 2: So the answer is: pods with new beans
  • Answer: pods with new beans
  • 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 life cycle of a bean plant, what comes straight after "seedling"? (pods with new beans / plant with flowers / root and shoot appear / bean seed) → plant with flowersPrompt: Picture the plant growing bigger, then making seeds.
  2. After pollination, which part of the flower becomes the fruit? (the stem / the petals / the roots / the ovary) → the ovaryPrompt: It is the part that holds the ovules, which become seeds.

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 8 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. In the life cycle of a flowering plant, what comes straight after "adult plant"? (seed dispersal / flowering / seedling / pollination) → floweringPrompt: The cycle starts and ends with seeds.
  2. Why is it useful for seeds to be spread far from the parent plant? (Because seeds dislike their parents / So the parent plant can eat them / So new plants do not compete with the parent for light, water and space / So they stay in the shade) → So new plants do not compete with the parent for light, water and spacePrompt: What would happen if all the seeds grew right underneath the parent?

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: Seeds, bulbs and germination.
  • 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-3.

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

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Life cycle of a flowering plant

Name

Date

Score/ 8

  1. Question 1

    Why is it useful for seeds to be spread far from the parent plant?

    • A. So the parent plant can eat them
    • B. So they stay in the shade
    • C. So new plants do not compete with the parent for light, water and space
    • D. Because seeds dislike their parents
  2. Question 2

    In the life cycle of an apple tree, what comes straight after "young tree"?

    • A. apple pip
    • B. apples with pips
    • C. tree in blossom
    • D. pollination
  3. Question 3

    What is the young plant that grows from a seed called?

    • A. a bulb
    • B. a seedling
    • C. a fruit
    • D. a petal
  4. Question 4

    In the life cycle of a bean plant, what comes straight after "root and shoot appear"?

    • A. plant with flowers
    • B. seedling
    • C. pods with new beans
    • D. bean seed
  5. Question 5

    In the life cycle of a bean plant, what comes straight after "seedling"?

    • A. plant with flowers
    • B. pods with new beans
    • C. bean seed
    • D. root and shoot appear
  6. Question 6

    In the life cycle of a flowering plant, what comes straight after "germination"?

    • A. flowering
    • B. seed
    • C. pollination
    • D. seedling
  7. Question 7

    Why do flowering plants need flowers?

    • A. to hold the plant up
    • B. to make the soil
    • C. to take in water
    • D. to make seeds
  8. Question 8

    In the life cycle of a flowering plant, what comes straight after "flowering"?

    • A. seed dispersal
    • B. seedling
    • C. seed
    • D. pollination

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Answer key: Life cycle of a flowering plant

  1. 1. C. So new plants do not compete with the parent for light, water and space

  2. 2. C. tree in blossom

  3. 3. B. a seedling

  4. 4. B. seedling

  5. 5. A. plant with flowers

  6. 6. D. seedling

  7. 7. D. to make seeds

  8. 8. D. pollination