Lesson 123: Plants need sunlight and water

🔬 SCIENCE (40 Lessons)🟢 A. Living and Nonliving

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Objective

I can explain that plants need sunlight and water to live and grow. I can tell the difference between a healthy plant and a weak plant.

Materials

Mini-lesson — Plants need sunlight and water

Plants are living things. They grow and change.

Plants need:

  • Sunlight to make food in their leaves.
  • Water to move food through the plant.

Healthy plants

  • Have green leaves
  • Stand upright with strong stems
  • Grow new leaves and roots

Weak plants (not enough sun or water):

  • Leaves turn yellow or brown
  • Stem becomes soft or droopy
  • They stop growing

Plants cannot walk to get food. They stay in one place and need us to give water and place them in sunlight.

Picture strip: Sun + water = strong plant

Healthy vs Weak

Guided Practice — Compare two plants

You will look at two plants and describe what you see.

  1. Place two plants together (or pictures).
  2. Point to the healthy plant. Say: “It has green leaves.”
  3. Point to the weak plant. Say: “It looks droopy or brown.”
  4. Ask: Which plant got sunlight? Which one got water?
  5. Write or say one idea: “Plants need sun and water.”
  6. Trace words using the pad: plant, sun, water, leaf, grow.
Tracing Pad
Tracing snapshot for print

Practice 1 — Spot healthy or weak

Draw or look at two plants. Label one healthy and one weak. Write one reason for each.

Practice 2 — What does a plant need?

Write or draw the two things every plant needs to grow.

  1. Draw a sun
  2. Draw water drops or a watering can

Under each drawing, write the word sun or water.

Practice 3 — What happens if…?

Choose a plant and ask: “What if it gets no sunlight?” or “What if it gets no water?”

Quick Check — Plants need sunlight and water

Answer each question. Think about sunlight, water, and growth.

1) Plants are…

Plants are living things that grow.

2) What does a plant need to grow?

Plants need sunlight and water to grow.

3) Which plant would be healthy?

Green leaves show it is healthy.

4) Why would a plant be weak?

Plants need sun and water to grow well.

5) What do leaves help a plant do?

Leaves use sunlight to make food.

6) Roots help plants…

Roots take in water from the soil.

7) If a plant grows big, it…

Growing shows it is healthy.

8) Which plant gets sunlight?

Plants near light can get sun.

9) What happens to a plant with no water?

No water makes it weak.

10) Which picture helps plants?

Watering cans give water.

11) Why do plants stay in one place?

Plants cannot move like animals.

12) Why must we water plants?

Water helps plants live.

13) A plant in the sun and water looks…

Good light and water make it strong.

14) What should you do for a droopy plant?

Plants need sun and water to recover.

15) Which sentence is true?

Plants cannot grow without sun and water.

Assessment (parent/teacher)

Exit ticket (student)

Next time I will practise…

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