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Science lesson plan · Kindergarten (Reception and Year 1 in England) · 30 minutes

Test what a plant needs: light and water

Plants

CCSS NGSS.K-LS1-1CCSS NGSS.SEP 3England: EYFS Understanding the World: The natural worldEngland: KS1 Y2 Plants

Objective and success criteria

Students will: Test what a plant needs: light and water.

  • 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 growth experiments: read the results

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. Which part of a plant makes food using sunlight? (the roots / the leaves / the stem / the seeds) → the leavesPrompt: Which part is usually green and flat to catch the light?
  2. Plant parts: which statement is true? (Trees are not plants. / Leaves take in water from the soil. / Roots grow up towards the sky. / 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 flower / the roots / the stem / the leaves) → 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: Test what a plant needs: light and water. 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: One plant is kept in a dark cupboard and one on a sunny windowsill. Which grows green and strong?
  • Step 1: Plants need light to make food, so the one in the light grows well.
  • Step 2: So the answer is: the plant on the windowsill
  • Answer: the plant on the windowsill
  • 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. A plant on a windowsill leans towards the glass. Why? (The glass pulls it. / It is cold inside. / It is growing towards the light. / It is trying to get out.) → It is growing towards the light.Prompt: Where does most light come from in a room?
  2. Plant experiments: which statement is NOT true? (A plant without water will wilt. / To test light, you should also give one plant more water. / In a fair test you change only one thing. / Plants grown in the dark often turn pale and weak.) → To test light, you should also give one plant more water.Prompt: Remember what plants need and what makes a test fair.

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. Plant experiments: which statement is NOT true? (Plants need water, light and air to grow well. / A plant gets its food by eating soil. / In a fair test you change only one thing. / Plants grown in the dark often turn pale and weak.) → A plant gets its food by eating soil.Prompt: Remember what plants need and what makes a test fair.
  2. One plant is kept in a dark cupboard and one on a sunny windowsill. Which grows green and strong? (both the same / the plant on the windowsill / neither, plants need darkness / the plant in the cupboard) → the plant on the windowsillPrompt: What do leaves need to make food?

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 growth experiments: read the results.
  • 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/kindergarten.

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

eurekami

Test what a plant needs: light and water

Name

Date

Score/ 6

  1. Question 1

    Cress grown in the light gave 11 strong seedlings. Cress grown in the dark gave 8. What do these results show?

    Strong green seedlings02468101211in the light8in the dark
    • A. Plants need sweets to grow.
    • B. Plants grow best in the dark.
    • C. Light makes no difference to plants.
    • D. Plants need light to grow well.

  2. Question 2

    Plant experiments: which statement is NOT true?

    • A. To test light, you should also give one plant more water.
    • B. Plants need water, light and air to grow well.
    • C. In a fair test you change only one thing.
    • D. Plants grown in the dark often turn pale and weak.

  3. Question 3

    Two bean plants are the same. One gets water, one gets none. After a week, what do you see?

    • A. The watered plant turned brown.
    • B. The plant with no water grew taller.
    • C. The plant with no water is droopy and dry.
    • D. Both look exactly the same.

  4. Question 4

    Two cress pots grew for a week, one in the light and one in the dark. The chart shows how many seedlings stood up green and strong. How many more strong seedlings grew in the light?

    Strong green seedlings024681010in the light7in the dark

    Answer

  5. Question 5

    To test if plants need light, what must be the SAME for both plants?

    • A. the water, the soil and the type of plant
    • B. nothing, everything should be different
    • C. the amount of light
    • D. only the colour of the pot matters

  6. Question 6

    Cress grown in the light gave 18 strong seedlings. Cress grown in the dark gave 5. What do these results show?

    Strong green seedlings02468101214161818in the light5in the dark
    • A. Plants need light to grow well.
    • B. Plants need sweets to grow.
    • C. Light makes no difference to plants.
    • D. Plants grow best in the dark.

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Answer key: Test what a plant needs: light and water

  1. 1. D. Plants need light to grow well.

  2. 2. A. To test light, you should also give one plant more water.

  3. 3. C. The plant with no water is droopy and dry.

  4. 4. 3

  5. 5. A. the water, the soil and the type of plant

  6. 6. A. Plants need light to grow well.