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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 holds the plant up and carries water to the leaves? (the roots / the petals / the flower / the stem) → the stemPrompt: It is like a straw and a pole at the same time.
  2. Plant parts: which statement is true? (Trees are not plants. / Roots hold a plant in the ground. / Leaves take in water from the soil. / Only flowers are part of a plant.) → Roots hold a plant in the ground.Prompt: Picture a plant from its roots to its flower.
  3. The trunk of a tree is a very thick… (flower / stem / root / leaf) → stemPrompt: It holds the tree up.

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 growing towards the light. / It is cold inside. / 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? (In a fair test you change only one thing. / To test light, you should also give one plant more water. / A plant without water will wilt. / Plants need water, light and air to grow well.) → 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? (A plant without water will wilt. / Plants need water, light and air to grow well. / A plant gets its food by eating soil. / 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. A plant on a windowsill leans towards the glass. Why? (The glass pulls it. / It is growing towards the light. / It is trying to get out. / It is cold inside.) → It is growing towards the light.Prompt: Where does most light come from in a room?

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

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Test what a plant needs: light and water

Name

Date

Score/ 6

  1. Question 1

    Plant experiments: which statement is NOT true?

    • A. Plants grown in the dark often turn pale and weak.
    • B. Plants need water, light and air to grow well.
    • C. A plant without water will wilt.
    • D. Plants grow best in a dark cupboard.

  2. Question 2

    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 light6in the dark

    Answer

  3. Question 3

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

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

  4. Question 4

    Cress grown in the light gave 12 strong seedlings. Cress grown in the dark gave 5. What do these results show?

    Strong green seedlings02468101212in the light5in the dark
    • A. Plants need sweets to grow.
    • B. Plants need light to grow well.
    • C. Light makes no difference to plants.
    • D. Plants grow best in the dark.

  5. Question 5

    A plant on a windowsill leans towards the glass. Why?

    • A. It is cold inside.
    • B. It is trying to get out.
    • C. The glass pulls it.
    • D. It is growing towards the light.

  6. Question 6

    Cress grown in the light gave 20 strong seedlings. Cress grown in the dark gave 14. What do these results show?

    Strong green seedlings0246810121416182020in the light14in the dark
    • A. Plants need light to grow well.
    • B. Plants grow best in the dark.
    • C. Light makes no difference to plants.
    • D. Plants need sweets to grow.

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

  1. 1. D. Plants grow best in a dark cupboard.

  2. 2. 4

  3. 3. D. the water, the soil and the type of plant

  4. 4. B. Plants need light to grow well.

  5. 5. D. It is growing towards the light.

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