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Science lesson plan · 2nd grade (Year 3 in England) · 60 minutes

Seeds, bulbs and germination

Plants

CCSS NGSS.2-LS2-1England: KS1 Y2 Plants

Objective and success criteria

Students will: Seeds, bulbs and germination.

  • 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: What plants need to grow

Leads to: Life cycle of a flowering plant; How seeds travel: wind, water, animals and bursting pods

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 (What plants need to grow). Students answer on mini whiteboards.
  • Show answers together and note who needs support in the main task.
  1. A plant is not watered for a long time. What happens? (It wilts (droops) and may die. / Its leaves turn blue. / It grows taller. / It makes more flowers.) → It wilts (droops) and may die.Prompt: Plants need water to stay firm.
  2. What plants need: which statement is true? (Plants grow best in the dark. / Plants never need water. / The more water you give a plant, the better it always grows. / Plants need water.) → Plants need water.Prompt: Think about what keeps a plant healthy.
  3. What plants need: which statement is NOT true? (The more water you give a plant, the better it always grows. / Plants need water. / Plants need light to grow well. / Plants need air.) → The more water you give a plant, the better it always grows.Prompt: One sentence is a common mistake.

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: Seeds, bulbs and germination. 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: Is this a seed or a bulb: sunflower seed?
  • Step 1: Seeds are made by flowers and grow into new plants.
  • Step 2: So the answer is: seed
  • Answer: seed
  • 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. Is this a seed or a bulb: bean? (seed / bulb) → seedPrompt: Seeds are usually small and hard. Bulbs are rounder, with papery layers.
  2. Where does a young seedling get its energy before its leaves can make food? (the rain / the food store inside the seed / the Moon / the soil) → the food store inside the seedPrompt: What is packed inside a seed?

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. Cress seeds are put on damp cotton wool with no soil. What happens? (Nothing, seeds need soil. / They still germinate. / They melt. / They turn into bulbs.) → They still germinate.Prompt: What do seeds really need to start growing?
  2. Which of these is a seed? (tulip / garlic / onion / conker (horse chestnut)) → conker (horse chestnut)Prompt: Seeds come from inside fruits and pods. Bulbs are round and have papery layers.

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: What plants need to grow.
  • 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: Life cycle of a flowering plant; How seeds travel: wind, water, animals and bursting pods.
  • 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-2.

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

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Seeds, bulbs and germination

Name

Date

Score/ 8

  1. Question 1

    Cress seeds are put on damp cotton wool with no soil. What happens?

    • A. They melt.
    • B. Nothing, seeds need soil.
    • C. They turn into bulbs.
    • D. They still germinate.
  2. Question 2

    Is this a seed or a bulb: bean?

    • A. seed
    • B. bulb
  3. Question 3

    Which of these is a seed?

    • A. acorn
    • B. garlic
    • C. onion
    • D. hyacinth
  4. Question 4

    What grows first out of a germinating bean?

    • A. a root
    • B. a new bean
    • C. a flower
    • D. a fruit
  5. Question 5

    Is this a seed or a bulb: daffodil?

    • A. seed
    • B. bulb
  6. Question 6

    Which of these is a bulb?

    • A. pea
    • B. apple pip
    • C. bean
    • D. onion
  7. Question 7

    What do most seeds need to start growing (germinate)?

    • A. darkness and cold
    • B. sweets
    • C. salt
    • D. water and warmth
  8. Question 8

    Is this a seed or a bulb: onion?

    • A. seed
    • B. bulb

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Answer key: Seeds, bulbs and germination

  1. 1. D. They still germinate.

  2. 2. A. seed

  3. 3. A. acorn

  4. 4. A. a root

  5. 5. B. bulb

  6. 6. D. onion

  7. 7. D. water and warmth

  8. 8. B. bulb