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Life Science

Grade 3, Unit3L.2: Growing living Things

Unit 3L.2: Growing Living Things

• Growing living things

• Investigating plant growth

Science skills: • Estimating and measuring • Observing • Predicting • Comparing

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Life Science

Grade 3, Unit3L.2: Growing living Things

Growing living things Look at the picture. Use the science words and label the parts of the plant – Uroot U, UstemU, UleafU, UflowerU.

3.7.2

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Life Science

Grade 3, Unit3L.2: Growing living Things

Roots: It is a windy day, a sand storm in Doha!. It might blow you away! What stops the date palm trees from blowing away?

Tomato roots Carrot root Mangrove Plants have UrootsU. Roots hold the plant in the ground. They also take up water and minerals from the soil.

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Life Science

Grade 3, Unit3L.2: Growing living Things

Time to think! Why are the Tomato roots different to roots of a Mangrove. ------------------------------------------

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Activity: Steps 1- Put a plant in one of the jars. 2- Add water, enough to cover the roots. 3- Cover the top of both jars with foil. 4- Mark how high the water is in each jar. 5- UObserve U the jars every day for 5 days. Write what you see. ________________________

Materials Plant with roots, 2 jars of water, foil, tape, crayon

Process Skills Observing

We observe that the water in the jar goes down. This is because the roots absorb the water up into the plant.

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Life Science

Grade 3, Unit3L.2: Growing living Things

Time to think! Look at the picture of a cactus plant. It grows in very dry conditions. How will the cactus find and keep water? ________________________________________ ________________________________________ Stem: Most plants have UstemsU. Stems hold up the leaves, flowers and fruits of a plant. Stems carry the water and minerals from the roots to the rest of the plant.

Bamboo stem Date Palm Stem Sunflower stem The stems have very small Utubes U inside them which can be seen with a microscope. Mangoes! Can you spot the stem?

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Life Science

Grade 3, Unit3L.2: Growing living Things

Activity: Steps 1- Put a little water in a cup. 2- Add 10 drops of food colour. 3- Put the celery into the cup. 4- Draw what you Upredict U will happen. Prediction 5- Observe the celery the next day. Break the celery. Draw what you observe. The celery stem

Materials Celery stem, cup of water, food colour (Pink or red)

Process Skills Predicting and observing

The celery stem turned pink. This is because the stem sucked up the coloured water.

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Life Science

Grade 3, Unit3L.2: Growing living Things

Time to think! What happens to a plant if you pour too much or too little water? Too much water....__________________________ To little water....___________________________ Leaves It is a sunny summer day. You can sit under a shady tree. Look up and see all the leaves!

ULeavesU are an important part of a plant. Leaves use sunlight, air and water to make food for the plant. Leaves come in many shapes and sizes.

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Life Science

Grade 3, Unit3L.2: Growing living Things

Activity: Make a leaf rubbing Steps: 1- Put a leaf between 2 pieces of paper. 2- Rub the side of the crayon over the leaf. 3- Observe the leaf rubbing. 4- Cut out your leaf rubbing and glue it into the frame.

Materials Paper, leaf, crayon

Process Skills Observing

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Life Science

Grade 3, Unit3L.2: Growing living Things

What do leaves do? Leaves use energy from the sun to change the water from the soil and the carbon dioxide from the air into sugar and oxygen. Time to think Some leaves are not green in colour. How do these plants get their food? Do they need food? What will happen to them? ________________________________________ Activity: Design a Ufair testU to answer the question ‘Do plants need their leaves to grow? Why? ___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

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Life Science

Grade 3, Unit3L.2: Growing living Things

Seeds Dig a hole. Plant a seed. What happens to the seed in the ground? _________________________________________

Different kinds of seeds

A UseedU can grow into a new plant. The picture below shows a bean seed. Water in the soil helps the seed coat come off. Next, a Uroot U grows down. A UstemU grows up. ULeavesU grow. The seed has grown into a bean plant. The new plant needs UsunlightU, Uair U (oxygen) and Uwater U to grow.

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Life Science

Grade 3, Unit3L.2: Growing living Things

How does a seed grow into a plant?

A seed grows into a tree

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Life Science

Grade 3, Unit3L.2: Growing living Things

Activity: Steps: 1- Put 3 or 4 seeds in the bag/jar. 2- Put a little water in the bag/jar with some wet tissue. 3- Observe the seeds as they grow. 4- When the seeds grow roots, put it in a cup of soil. 5- Draw your plant as it grows.

Complete each sentence-

A- I put a seed in a bag/jar in______________ B- I saw a root grow on ______________ C- I planted the seed in______________ D- I saw the leaf on______________

Materials Seeds, plastic bag, paper towel, cup of water, soil, and stapler

Process Skills Observing

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Life Science

Grade 3, Unit3L.2: Growing living Things

Key terms: • Root • Stem • Leaf • Seed

Key ideas: • Plants have 4 main parts:

Root, stem, leaf and seed.

• Each part has a special function.

Key Questions Q1-Fill in the table given below:

Part of the Plant

Function Diagram

Root

Stem

Leaf

Seed

Grows into a new plant

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Life Science

Grade 3, Unit3L.2: Growing living Things

Project Classifying the plants you eat. This means putting them into groups. Steps: 1- Write the word UrootsU on one paper. Do the same thing for UstemsU, Uleaves U, UfruitsU and UseedsU. 2- Gather pictures of different plants you eat! Decide what plant part each picture shows. 3- Classify the pictures. Glue them onto the correct papers. You make have to cut a picture into two! Here are some examples:

Materials • Pictures of foods,

papers, glue

Process Skills • Classifying

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Life Science

Grade 3, Unit3L.2: Growing living Things

Investigating plant growth Imagine your window box. What would you plant in it? How would you help your plants to grow? Plants grow in soil. Plants need light to grow well. They need air, water and warmth, too. With the right amount of light, air, water and temperature, most plants can grow well.

3.7.1

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Life Science

Grade 3, Unit3L.2: Growing living Things

Activity (1): Steps: 1-Label one plant (A) as Uwater U, Uair and lightU and the other plant(B) with Uno water, but air and lightU on the index cards. 2-Keep plant (A) and plant (B) near a window sill. 3-Water plant (A) and don’t water plant (B). 4- Observe the plants every day, UPredict U what will happen to both the plants. __________________________________________________________________________________ Draw what you observe.

(A) (B)

Materials • 2 plants in container • Index cards

Process Skills • Experimenting • Observing.

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Life Science

Grade 3, Unit3L.2: Growing living Things

Activity (2): Steps: 1-Label one plant (A) as Uwater, air and lightU and the other plant (B) with Uwater, air and no lightU on the index cards. 2-Keep plant (A) near a window sill and the plant (B) in a dark place. 3- Observe the plants every day, UPredict U what will happen to both the plants. __________________________________________________________________________________ Draw what you observe.

(A) (B)

Materials • 2 plants in container • Index cards

Process Skills • Experimenting • Observing.

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Life Science

Grade 3, Unit3L.2: Growing living Things

Activity (3):

Steps: 1-Label one plant (A) as Uwater, air and lightU and the other plant (B) with Uwater, no air and lightU on the index cards. 2-Cover plant (B) with plastic bag, and keep plant (A) without covering. Keep the plants near a window sill and water them every day. 3- Observe the plants every day, What will happen to both the plants? __________________________________________________________________________________ Draw what you observe.

(A) (B)

Materials • 2 plants in container • Index cards

Process Skills • Experimenting • Observing.

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Life Science

Grade 3, Unit3L.2: Growing living Things

Conclusion: Complete the missing words.

Plants need ........, air and ...........to grow well. If any one of these is missing it will.................

Key terms: • Light • Air • Water

Key ideas: Plants need: • Light as a source of energy. • Air as a source of carbon

dioxide • Water from the soil that it

takes up via the roots.

Key Questions Q1- What happens to plants when they do not get light? If you put a plant in a dark place for a week, how will it look? Draw how the plant will look?

Write what you think.

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Draw how the plant will look?