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Science lesson plan · 2nd grade (Year 3 in England) · 30 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 · 4 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 left in a dark cupboard for two weeks. What will probably happen? (It grows flowers faster. / It turns pale and weak. / It grows greener. / Nothing changes.) → It turns pale and weak.Prompt: What do leaves need to make food?
  2. What plants need: which statement is true? (Plants eat soil to get their food. / Plants take in minerals (nutrients) from the soil through their roots. / The more water you give a plant, the better it always grows. / Plants grow best in the dark.) → Plants take in minerals (nutrients) from the soil through their roots.Prompt: Think about what keeps a plant healthy.
  3. What plants need: which statement is NOT true? (Plants take in minerals (nutrients) from the soil through their roots. / Plants need water. / Plants eat soil to get their food. / Plants need light to grow well.) → Plants eat soil to get their food.Prompt: One sentence is a common mistake.

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: Seeds, bulbs and germination. 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: 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 · 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. 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? (They still germinate. / They turn into bulbs. / They melt. / Nothing, seeds need soil.) → They still germinate.Prompt: What do seeds really need to start growing?

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. What grows first out of a germinating bean? (a root / a fruit / a flower / a new bean) → a rootPrompt: The plant needs to hold on and find water first.
  2. Is this a seed or a bulb: pea? (seed / bulb) → seedPrompt: Seeds are usually small and hard. Bulbs are rounder, with 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/ 6

  1. Question 1

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

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

    Which of these is a bulb?

    • A. garlic
    • B. sunflower seed
    • C. apple pip
    • D. bean
  3. Question 3

    Is this a seed or a bulb: hyacinth?

    • A. seed
    • B. bulb
  4. Question 4

    What grows first out of a germinating bean?

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

    Which of these is a seed?

    • A. garlic
    • B. conker (horse chestnut)
    • C. hyacinth
    • D. tulip
  6. Question 6

    Is this a seed or a bulb: daffodil?

    • A. seed
    • B. bulb

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Answer key: Seeds, bulbs and germination

  1. 1. B. They still germinate.

  2. 2. A. garlic

  3. 3. B. bulb

  4. 4. C. a root

  5. 5. B. conker (horse chestnut)

  6. 6. B. bulb